diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 3f221f5eb47ee690612657eb0fede58f7d1e813f..78af572fd17c3e4a903aaf59062744455808e77a 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -201,8 +201,8 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
 		high bit of the PPI port B (0x61).  Note that some PS/2s,
 		notably the 55SX, work fine if this is removed.  */
 
-		irq = inb_p( 0x61 );	/* read the current state */
-		outb_p( irq|0x80, 0x61 );	/* reset the IRQ */
+		u8 irq_v = inb_p( 0x61 );	/* read the current state */
+		outb_p( irq_v|0x80, 0x61 );	/* reset the IRQ */
 	}
 
 	write_sequnlock(&xtime_lock);
diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
index 8ff5c4e50823bfbe7cac35f0544ab750ee024363..323592de047b5fecc58c13f382b05e2da985c27e 100644
--- a/drivers/atm/ambassador.c
+++ b/drivers/atm/ambassador.c
@@ -862,15 +862,10 @@ static inline void interrupts_off (amb_dev * dev) {
 /********** interrupt handling **********/
 
 static irqreturn_t interrupt_handler(int irq, void *dev_id) {
-  amb_dev * dev = (amb_dev *) dev_id;
+  amb_dev * dev = dev_id;
   
   PRINTD (DBG_IRQ|DBG_FLOW, "interrupt_handler: %p", dev_id);
   
-  if (!dev_id) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq with NULL dev_id: %d", irq);
-    return IRQ_NONE;
-  }
-  
   {
     u32 interrupt = rd_plain (dev, offsetof(amb_mem, interrupt));
   
diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
index 33e9ee47392be37264f62200f9ef274fa7bd28e6..f59349206dd29f9a918cad1531dfc26ce07e91a5 100644
--- a/drivers/atm/horizon.c
+++ b/drivers/atm/horizon.c
@@ -1389,15 +1389,6 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id) {
   
   PRINTD (DBG_FLOW, "interrupt_handler: %p", dev_id);
   
-  if (!dev_id) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq with NULL dev_id: %d", irq);
-    return IRQ_NONE;
-  }
-  if (irq != dev->irq) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq mismatch: %d", irq);
-    return IRQ_NONE;
-  }
-  
   // definitely for us
   irq_ok = 0;
   while ((int_source = rd_regl (dev, INT_SOURCE_REG_OFF)
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 8895f026bea7a2f67a393bf44dae0c21d1dad3eb..267825501dfe61570ed12300b45be52590bf5f89 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -1892,11 +1892,9 @@ static inline void lanai_int_1(struct lanai_dev *lanai, u32 reason)
 
 static irqreturn_t lanai_int(int irq, void *devid)
 {
-	struct lanai_dev *lanai = (struct lanai_dev *) devid;
+	struct lanai_dev *lanai = devid;
 	u32 reason;
 
-	(void) irq;	/* unused variables */
-
 #ifdef USE_POWERDOWN
 	/*
 	 * If we're powered down we shouldn't be generating any interrupts -
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 3e8ab84b9447071309f90cd295b233181e5efa79..742d0740310140a59e7a03ca4ab6883ee82be8e2 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -5254,7 +5254,7 @@ static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5295,7 +5295,7 @@ static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5337,7 +5337,7 @@ static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5379,7 +5379,7 @@ static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5417,7 +5417,7 @@ static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5455,7 +5455,7 @@ static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
 				       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   unsigned long flags;
 
@@ -5493,7 +5493,7 @@ static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
 				      void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   unsigned long flags;
 
diff --git a/drivers/cdrom/mcdx.c b/drivers/cdrom/mcdx.c
index 60e1978ec0eadcbb52cc01480063b35bf123a134..f574962f4288d36233491eb0d98f8968e2d0da2b 100644
--- a/drivers/cdrom/mcdx.c
+++ b/drivers/cdrom/mcdx.c
@@ -850,10 +850,6 @@ static irqreturn_t mcdx_intr(int irq, void *dev_id)
 	struct s_drive_stuff *stuffp = dev_id;
 	unsigned char b;
 
-	if (stuffp == NULL) {
-		xwarn("mcdx: no device for intr %d\n", irq);
-		return IRQ_NONE;
-	}
 #ifdef AK2
 	if (!stuffp->busy && stuffp->pending)
 		stuffp->int_err = 1;
diff --git a/drivers/char/rio/func.h b/drivers/char/rio/func.h
index 6b039186856d6a85b1ac28980c0e67dbb475473a..9e7283bd81a01b32a027c20afb23be87e1cfd81f 100644
--- a/drivers/char/rio/func.h
+++ b/drivers/char/rio/func.h
@@ -88,7 +88,7 @@ void RIOHostReset(unsigned int, struct DpRam __iomem *, unsigned int);
 
 /* riointr.c */
 void RIOTxEnable(char *);
-void RIOServiceHost(struct rio_info *, struct Host *, int);
+void RIOServiceHost(struct rio_info *, struct Host *);
 int riotproc(struct rio_info *, struct ttystatics *, int, int);
 
 /* rioparam.c */
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 3bea594600d46162cff00c6ad640a1908bdd93f6..c382df0f82f60957efd73391cc69c17e1577e0b7 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -368,7 +368,7 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
 	struct Host *HostP;
 	func_enter();
 
-	HostP = (struct Host *) ptr;	/* &p->RIOHosts[(long)ptr]; */
+	HostP = ptr;			/* &p->RIOHosts[(long)ptr]; */
 	rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
 
 	/* AAargh! The order in which to do these things is essential and
@@ -402,7 +402,7 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
 		return IRQ_HANDLED;
 	}
 
-	RIOServiceHost(p, HostP, irq);
+	RIOServiceHost(p, HostP);
 
 	rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
 
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c
index 0bd09040a5c091e0640c0214e893d17777c29764..eeda40c5e189067a547e1db2a5670a6756fc5a74 100644
--- a/drivers/char/rio/riointr.c
+++ b/drivers/char/rio/riointr.c
@@ -181,7 +181,7 @@ static int RupIntr;
 static int RxIntr;
 static int TxIntr;
 
-void RIOServiceHost(struct rio_info *p, struct Host *HostP, int From)
+void RIOServiceHost(struct rio_info *p, struct Host *HostP)
 {
 	rio_spin_lock(&HostP->HostLock);
 	if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index be68cfb0ae69d97fb2511528bc222a5afe4a9bf6..5ab32b38f45a28f55737c1b88ead868d299671ea 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -559,11 +559,10 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id)
 	int handled = 0;
 
 	bp = IRQ_to_board[irq];
-	
-	if (!bp || !(bp->flags & RC_BOARD_ACTIVE))  {
+
+	if (!(bp->flags & RC_BOARD_ACTIVE))
 		return IRQ_NONE;
-	}
-	
+
 	while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) &
 				 (RC_BSR_TOUT | RC_BSR_TINT |
 				  RC_BSR_MINT | RC_BSR_RINT))) {
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 6022495571ae883e2c86ec9f8e5122c9e5b1b4e9..d0b88d0e87fdd5f72f5b6d992efafafadf877ea5 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -912,7 +912,7 @@ static irqreturn_t sx_interrupt(int irq, void *dev_id)
 	spin_lock_irqsave(&bp->lock, flags);
 
 	dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __FUNCTION__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
-	if (!bp || !(bp->flags & SX_BOARD_ACTIVE)) {
+	if (!(bp->flags & SX_BOARD_ACTIVE)) {
 		dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", irq);
 		spin_unlock_irqrestore(&bp->lock, flags);
 		func_exit();
diff --git a/drivers/isdn/act2000/act2000_isa.c b/drivers/isdn/act2000/act2000_isa.c
index 3014495b7ff7318234d919ef105d32d237842b32..3cac23739344cbae32ecf27b50c6b6f4da987535 100644
--- a/drivers/isdn/act2000/act2000_isa.c
+++ b/drivers/isdn/act2000/act2000_isa.c
@@ -16,8 +16,6 @@
 #include "act2000_isa.h"
 #include "capi.h"
 
-static act2000_card *irq2card_map[16];
-
 /*
  * Reset Controller, then try to read the Card's signature.
  + Return:
@@ -65,14 +63,9 @@ act2000_isa_detect(unsigned short portbase)
 static irqreturn_t
 act2000_isa_interrupt(int irq, void *dev_id)
 {
-        act2000_card *card = irq2card_map[irq];
+        act2000_card *card = dev_id;
         u_char istatus;
 
-        if (!card) {
-                printk(KERN_WARNING
-                       "act2000: Spurious interrupt!\n");
-                return IRQ_NONE;
-        }
         istatus = (inb(ISA_PORT_ISR) & 0x07);
         if (istatus & ISA_ISR_OUT) {
                 /* RX fifo has data */
@@ -139,17 +132,15 @@ int
 act2000_isa_config_irq(act2000_card * card, short irq)
 {
         if (card->flags & ACT2000_FLAGS_IVALID) {
-                free_irq(card->irq, NULL);
-                irq2card_map[card->irq] = NULL;
+                free_irq(card->irq, card);
         }
         card->flags &= ~ACT2000_FLAGS_IVALID;
         outb(ISA_COR_IRQOFF, ISA_PORT_COR);
         if (!irq)
                 return 0;
 
-	if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, NULL)) {
+	if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
 		card->irq = irq;
-		irq2card_map[card->irq] = card;
 		card->flags |= ACT2000_FLAGS_IVALID;
                 printk(KERN_WARNING
                        "act2000: Could not request irq %d\n",irq);
@@ -188,10 +179,9 @@ act2000_isa_release(act2000_card * card)
         unsigned long flags;
 
         spin_lock_irqsave(&card->lock, flags);
-        if (card->flags & ACT2000_FLAGS_IVALID) {
-                free_irq(card->irq, NULL);
-                irq2card_map[card->irq] = NULL;
-        }
+        if (card->flags & ACT2000_FLAGS_IVALID)
+                free_irq(card->irq, card);
+
         card->flags &= ~ACT2000_FLAGS_IVALID;
         if (card->flags & ACT2000_FLAGS_PVALID)
                 release_region(card->port, ISA_REGION);
diff --git a/drivers/media/video/zoran_device.c b/drivers/media/video/zoran_device.c
index d9d5020a2224b792e45422193d6db3dfa0daeec2..168e431d7c716e56b5cd924047032901cff31e64 100644
--- a/drivers/media/video/zoran_device.c
+++ b/drivers/media/video/zoran_device.c
@@ -1415,7 +1415,7 @@ zoran_irq (int             irq,
 	struct zoran *zr;
 	unsigned long flags;
 
-	zr = (struct zoran *) dev_id;
+	zr = dev_id;
 	count = 0;
 
 	if (zr->testing) {
diff --git a/drivers/net/3c509.c b/drivers/net/3c509.c
index 7ad0a54779c44175c070112605b1d710fd3109f4..f791bf026e5191711d46308facecdb0d89b9e009 100644
--- a/drivers/net/3c509.c
+++ b/drivers/net/3c509.c
@@ -912,16 +912,11 @@ el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 el3_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct el3_private *lp;
 	int ioaddr, status;
 	int i = max_interrupt_work;
 
-	if (dev == NULL) {
-		printk ("el3_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
 	lp = netdev_priv(dev);
 	spin_lock(&lp->lock);
 
diff --git a/drivers/net/3c523.c b/drivers/net/3c523.c
index 1c97271112d0ebb04ae86cc3043bdc1870c52425..91849469b4f49f0118f935b33c4caeb0c1afb683 100644
--- a/drivers/net/3c523.c
+++ b/drivers/net/3c523.c
@@ -902,14 +902,11 @@ static void *alloc_rfa(struct net_device *dev, void *ptr)
 static irqreturn_t
 elmc_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	unsigned short stat;
 	struct priv *p;
 
-	if (dev == NULL) {
-		printk(KERN_ERR "elmc-interrupt: irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	} else if (!netif_running(dev)) {
+	if (!netif_running(dev)) {
 		/* The 3c523 has this habit of generating interrupts during the
 		   reset.  I'm not sure if the ni52 has this same problem, but it's
 		   really annoying if we haven't finished initializing it.  I was
diff --git a/drivers/net/3c527.c b/drivers/net/3c527.c
index d516c3225ca469aea45e95e6e4e53ad38a62130d..f4aca5386add1c94238d23205e408ef19e8b12e1 100644
--- a/drivers/net/3c527.c
+++ b/drivers/net/3c527.c
@@ -1324,11 +1324,6 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id)
 	int rx_event = 0;
 	int tx_event = 0;
 
-	if (dev == NULL) {
-		printk(KERN_WARNING "%s: irq %d for unknown device.\n", cardname, irq);
-		return IRQ_NONE;
-	}
-
 	ioaddr = dev->base_addr;
 	lp = netdev_priv(dev);
 
diff --git a/drivers/net/8390.c b/drivers/net/8390.c
index fa3442cb1a495f444b0e3c05412d089f3dfa9d90..3d1c599ac3cbeead34d4954181fd69f4abe3d611 100644
--- a/drivers/net/8390.c
+++ b/drivers/net/8390.c
@@ -406,14 +406,8 @@ irqreturn_t ei_interrupt(int irq, void *dev_id)
 	int interrupts, nr_serviced = 0;
 	struct ei_device *ei_local;
 
-	if (dev == NULL)
-	{
-		printk ("net_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
 	e8390_base = dev->base_addr;
-	ei_local = (struct ei_device *) netdev_priv(dev);
+	ei_local = netdev_priv(dev);
 
 	/*
 	 *	Protect the irq test too.
diff --git a/drivers/net/atp.c b/drivers/net/atp.c
index 062f80e20874b921e8613119af69d72d3539e864..2d306fcb7f3648bfb1d9b13598384db711d2dfe8 100644
--- a/drivers/net/atp.c
+++ b/drivers/net/atp.c
@@ -598,17 +598,13 @@ static int atp_send_packet(struct sk_buff *skb, struct net_device *dev)
    Handle the network interface interrupts. */
 static irqreturn_t atp_interrupt(int irq, void *dev_instance)
 {
-	struct net_device *dev = (struct net_device *)dev_instance;
+	struct net_device *dev = dev_instance;
 	struct net_local *lp;
 	long ioaddr;
 	static int num_tx_since_rx;
 	int boguscount = max_interrupt_work;
 	int handled = 0;
 
-	if (dev == NULL) {
-		printk(KERN_ERR "ATP_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
 	ioaddr = dev->base_addr;
 	lp = netdev_priv(dev);
 
diff --git a/drivers/net/de600.c b/drivers/net/de600.c
index d9b006c9e36705c0d35e198bac875ceaeb2eddac..690bb40b353dacedf8a6979998ca4f7cc3b1d39d 100644
--- a/drivers/net/de600.c
+++ b/drivers/net/de600.c
@@ -265,12 +265,6 @@ static irqreturn_t de600_interrupt(int irq, void *dev_id)
 	int		retrig = 0;
 	int		boguscount = 0;
 
-	/* This might just as well be deleted now, no crummy drivers present :-) */
-	if ((dev == NULL) || (DE600_IRQ != irq)) {
-		printk(KERN_ERR "%s: bogus interrupt %d\n", dev?dev->name:"DE-600", irq);
-		return IRQ_NONE;
-	}
-
 	spin_lock(&de600_lock);
 
 	select_nic();
diff --git a/drivers/net/declance.c b/drivers/net/declance.c
index e179aa1c1ba059b0f18472f093820d5bd68c5736..00e2a8a134d7a2993530e29f97ac86d4458bf924 100644
--- a/drivers/net/declance.c
+++ b/drivers/net/declance.c
@@ -696,7 +696,7 @@ static void lance_tx(struct net_device *dev)
 
 static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 
 	printk("%s: DMA error\n", dev->name);
 	return IRQ_HANDLED;
@@ -704,7 +704,7 @@ static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id)
 
 static irqreturn_t lance_interrupt(const int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct lance_private *lp = netdev_priv(dev);
 	volatile struct lance_regs *ll = lp->ll;
 	int csr0;
diff --git a/drivers/net/dgrs.c b/drivers/net/dgrs.c
index 6b1234b09fb39bb6af441985b3c209c01373738b..a79520295fd0ec9fcce2330ecc98cc1542cd14b9 100644
--- a/drivers/net/dgrs.c
+++ b/drivers/net/dgrs.c
@@ -897,8 +897,8 @@ static int dgrs_ioctl(struct net_device *devN, struct ifreq *ifr, int cmd)
 
 static irqreturn_t dgrs_intr(int irq, void *dev_id)
 {
-	struct net_device	*dev0 = (struct net_device *) dev_id;
-	DGRS_PRIV	*priv0 = (DGRS_PRIV *) dev0->priv;
+	struct net_device	*dev0 = dev_id;
+	DGRS_PRIV	*priv0 = dev0->priv;
 	I596_CB		*cbp;
 	int		cmd;
 	int		i;
diff --git a/drivers/net/eepro.c b/drivers/net/eepro.c
index aae454aaa1c63ff5d7a09b8a731eccc7a40cce7d..a4eb0dc99ecffe42c92b87a1bacac5c72234caa1 100644
--- a/drivers/net/eepro.c
+++ b/drivers/net/eepro.c
@@ -994,16 +994,6 @@ static int eepro_open(struct net_device *dev)
 		return -EAGAIN;
 	}
 
-#ifdef irq2dev_map
-	if  (((irq2dev_map[dev->irq] != 0)
-		|| (irq2dev_map[dev->irq] = dev) == 0) &&
-		(irq2dev_map[dev->irq]!=dev)) {
-		/* printk("%s: IRQ map wrong\n", dev->name); */
-	        free_irq(dev->irq, dev);
-		return -EAGAIN;
-	}
-#endif
-
 	/* Initialize the 82595. */
 
 	eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
@@ -1198,17 +1188,11 @@ static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 eepro_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev =  (struct net_device *)dev_id;
-	                      /* (struct net_device *)(irq2dev_map[irq]);*/
+	struct net_device *dev = dev_id;
 	struct eepro_local *lp;
 	int ioaddr, status, boguscount = 20;
 	int handled = 0;
 
-	if (dev == NULL) {
-                printk (KERN_ERR "eepro_interrupt(): irq %d for unknown device.\\n", irq);
-                return IRQ_NONE;
-        }
-
 	lp = netdev_priv(dev);
 
         spin_lock(&lp->lock);
@@ -1288,10 +1272,6 @@ static int eepro_close(struct net_device *dev)
 	/* release the interrupt */
 	free_irq(dev->irq, dev);
 
-#ifdef irq2dev_map
-	irq2dev_map[dev->irq] = 0;
-#endif
-
 	/* Update the statistics here. What statistics? */
 
 	return 0;
diff --git a/drivers/net/eexpress.c b/drivers/net/eexpress.c
index 05ca730fe81ed60cf8e83c652583445c09fcf7dc..e14be020e5624b2f5f999b1d90a0771cb0004f69 100644
--- a/drivers/net/eexpress.c
+++ b/drivers/net/eexpress.c
@@ -796,13 +796,6 @@ static irqreturn_t eexp_irq(int irq, void *dev_info)
 	unsigned short ioaddr,status,ack_cmd;
 	unsigned short old_read_ptr, old_write_ptr;
 
-	if (dev==NULL)
-	{
-		printk(KERN_WARNING "eexpress: irq %d for unknown device\n",
-		       irq);
-		return IRQ_NONE;
-	}
-
 	lp = netdev_priv(dev);
 	ioaddr = dev->base_addr;
 
diff --git a/drivers/net/irda/ali-ircc.c b/drivers/net/irda/ali-ircc.c
index 971e2dee1e6bae0a43e60dbd39dc60371fbe5d87..cebf8c374bc57521fa93325fd531e3d127bccf3b 100644
--- a/drivers/net/irda/ali-ircc.c
+++ b/drivers/net/irda/ali-ircc.c
@@ -662,19 +662,13 @@ static int ali_ircc_read_dongle_id (int i, chipio_t *info)
  */
 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct ali_ircc_cb *self;
 	int ret;
 		
 	IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
 		
- 	if (!dev) {
-		IRDA_WARNING("%s: irq %d for unknown device.\n",
-			     ALI_IRCC_DRIVER_NAME, irq);
-		return IRQ_NONE;
-	}	
-	
-	self = (struct ali_ircc_cb *) dev->priv;
+	self = dev->priv;
 	
 	spin_lock(&self->lock);
 	
diff --git a/drivers/net/irda/donauboe.c b/drivers/net/irda/donauboe.c
index 7a9128181e68d780341cdc538b919a970ca1625e..636d0630fe02b31b1d2c4edb67e4ab11aba3cace 100644
--- a/drivers/net/irda/donauboe.c
+++ b/drivers/net/irda/donauboe.c
@@ -657,12 +657,6 @@ toshoboe_makemttpacket (struct toshoboe_cb *self, void *buf, int mtt)
   return xbofs;
 }
 
-static int toshoboe_invalid_dev(int irq)
-{
-  printk (KERN_WARNING DRIVER_NAME ": irq %d for unknown device.\n", irq);
-  return 1;
-}
-
 #ifdef USE_PROBE
 /***********************************************************************/
 /* Probe code */
@@ -711,12 +705,9 @@ stuff_byte (__u8 byte, __u8 * buf)
 static irqreturn_t
 toshoboe_probeinterrupt (int irq, void *dev_id)
 {
-  struct toshoboe_cb *self = (struct toshoboe_cb *) dev_id;
+  struct toshoboe_cb *self = dev_id;
   __u8 irqstat;
 
-  if (self == NULL && toshoboe_invalid_dev(irq))
-    return IRQ_NONE;
-
   irqstat = INB (OBOE_ISR);
 
 /* was it us */
diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c
index 6ea78ececca71c4543225c8cee4eb1f068e82b41..654a68b490ae6011f7810e968c8426e382b69872 100644
--- a/drivers/net/irda/irport.c
+++ b/drivers/net/irda/irport.c
@@ -766,18 +766,14 @@ static inline void irport_receive(struct irport_cb *self)
  */
 static irqreturn_t irport_interrupt(int irq, void *dev_id) 
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct irport_cb *self;
 	int boguscount = 0;
 	int iobase;
 	int iir, lsr;
 	int handled = 0;
 
-	if (!dev) {
-		IRDA_WARNING("%s() irq %d for unknown device.\n", __FUNCTION__, irq);
-		return IRQ_NONE;
-	}
-	self = (struct irport_cb *) dev->priv;
+	self = dev->priv;
 
 	spin_lock(&self->lock);
 
diff --git a/drivers/net/irda/irport.h b/drivers/net/irda/irport.h
index 4393168347e3d6c0b63987e5d2d309de66eebffb..3f46b84c6c85cd96063e812a7be370b9a05ac08d 100644
--- a/drivers/net/irda/irport.h
+++ b/drivers/net/irda/irport.h
@@ -74,7 +74,7 @@ struct irport_cb {
 	/* For piggyback drivers */
 	void *priv;                
 	void (*change_speed)(void *priv, __u32 speed);
-	int (*interrupt)(int irq, void *dev_id);
+	irqreturn_t (*interrupt)(int irq, void *dev_id);
 };
 
 #endif /* IRPORT_H */
diff --git a/drivers/net/irda/nsc-ircc.c b/drivers/net/irda/nsc-ircc.c
index ea12e999814ab96916ca4ccbea1b773c5360c285..29b5ccd29d0bbcca3a7d7e78cf352da4848a9d3a 100644
--- a/drivers/net/irda/nsc-ircc.c
+++ b/drivers/net/irda/nsc-ircc.c
@@ -2068,17 +2068,12 @@ static void nsc_ircc_fir_interrupt(struct nsc_ircc_cb *self, int iobase,
  */
 static irqreturn_t nsc_ircc_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct nsc_ircc_cb *self;
 	__u8 bsr, eir;
 	int iobase;
 
-	if (!dev) {
-		IRDA_WARNING("%s: irq %d for unknown device.\n",
-			     driver_name, irq);
-		return IRQ_NONE;
-	}
-	self = (struct nsc_ircc_cb *) dev->priv;
+	self = dev->priv;
 
 	spin_lock(&self->lock);	
 
diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
index b4fb92a7baa8c0af9eeb7a3ccd579484ad520a08..4212657fa4f976900f498d813d3cc60363f3815b 100644
--- a/drivers/net/irda/w83977af_ir.c
+++ b/drivers/net/irda/w83977af_ir.c
@@ -1113,17 +1113,12 @@ static __u8 w83977af_fir_interrupt(struct w83977af_ir *self, int isr)
  */
 static irqreturn_t w83977af_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct w83977af_ir *self;
 	__u8 set, icr, isr;
 	int iobase;
 
-	if (!dev) {
-		printk(KERN_WARNING "%s: irq %d for unknown device.\n", 
-			driver_name, irq);
-		return IRQ_NONE;
-	}
-	self = (struct w83977af_ir *) dev->priv;
+	self = dev->priv;
 
 	iobase = self->io.fir_base;
 
diff --git a/drivers/net/lance.c b/drivers/net/lance.c
index 7afac47e59adb4f333b86c00aaf38c2775c49b48..6efbd499d7526ebdf5fb3fb8a401a07630f71337 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -1019,11 +1019,6 @@ static irqreturn_t lance_interrupt(int irq, void *dev_id)
 	int csr0, ioaddr, boguscnt=10;
 	int must_restart;
 
-	if (dev == NULL) {
-		printk ("lance_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
 	ioaddr = dev->base_addr;
 	lp = dev->priv;
 
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index e5f3669109149a633f23b00c472e459565e29bce..5ddd5742f7794f47c0f129d3c846b99df7089a45 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -1201,14 +1201,8 @@ static irqreturn_t ax_interrupt(int irq, void *dev_id)
 	struct ei_device *ei_local;
     	int handled = 0;
 
-	if (dev == NULL) 
-	{
-		printk ("net_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-    
 	e8390_base = dev->base_addr;
-	ei_local = (struct ei_device *) netdev_priv(dev);
+	ei_local = netdev_priv(dev);
 
 	/*
 	 *	Protect the irq test too.
diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c
index c73e2f210774f2fc0eba871acc9668bf3e95c279..36f9d988278f76771292c45a365a41ddd4ad478e 100644
--- a/drivers/net/pcnet32.c
+++ b/drivers/net/pcnet32.c
@@ -2569,13 +2569,6 @@ pcnet32_interrupt(int irq, void *dev_id)
 	u16 csr0;
 	int boguscnt = max_interrupt_work;
 
-	if (!dev) {
-		if (pcnet32_debug & NETIF_MSG_INTR)
-			printk(KERN_DEBUG "%s(): irq %d for unknown device\n",
-			       __FUNCTION__, irq);
-		return IRQ_NONE;
-	}
-
 	ioaddr = dev->base_addr;
 	lp = dev->priv;
 
diff --git a/drivers/net/plip.c b/drivers/net/plip.c
index c0b333d2917a92ed5cf861a5f750fc35f82271ad..71afb274498f5558f1c2f33334441503d43a1a19 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -909,11 +909,6 @@ plip_interrupt(int irq, void *dev_id)
 	struct plip_local *rcv;
 	unsigned char c0;
 
-	if (dev == NULL) {
-		printk(KERN_DEBUG "plip_interrupt: irq %d for unknown device.\n", irq);
-		return;
-	}
-
 	nl = netdev_priv(dev);
 	rcv = &nl->rcv_data;
 
diff --git a/drivers/net/saa9730.c b/drivers/net/saa9730.c
index c9efad8a917ebbac3eee6c2a2a9b9c90e81f6db7..b269513cde456290ba637d9aaad354789f5ff9f3 100644
--- a/drivers/net/saa9730.c
+++ b/drivers/net/saa9730.c
@@ -747,7 +747,7 @@ static int lan_saa9730_rx(struct net_device *dev)
 
 static irqreturn_t lan_saa9730_interrupt(const int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct lan_saa9730_private *lp = netdev_priv(dev);
 
 	if (lan_saa9730_debug > 5)
diff --git a/drivers/net/sb1000.c b/drivers/net/sb1000.c
index dc30dee5537f605dc05351f2113d610dad46f23b..b9fa4fbb13987fb32beb2b0cfffc463dbfdc4e12 100644
--- a/drivers/net/sb1000.c
+++ b/drivers/net/sb1000.c
@@ -1084,19 +1084,13 @@ static irqreturn_t sb1000_interrupt(int irq, void *dev_id)
 	char *name;
 	unsigned char st;
 	int ioaddr[2];
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct sb1000_private *lp = netdev_priv(dev);
 
 	const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00};
 	const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
 	const int MaxRxErrorCount = 6;
 
-	if (dev == NULL) {
-		printk(KERN_ERR "sb1000_interrupt(): irq %d for unknown device.\n",
-			irq);
-		return IRQ_NONE;
-	}
-
 	ioaddr[0] = dev->base_addr;
 	/* mem_start holds the second I/O address */
 	ioaddr[1] = dev->mem_start;
diff --git a/drivers/net/skfp/skfddi.c b/drivers/net/skfp/skfddi.c
index 06ea2626c6f420173ea0996242a1f7cec43f9752..9733a11c61462bbaae5dd3fcf386736dbc397d79 100644
--- a/drivers/net/skfp/skfddi.c
+++ b/drivers/net/skfp/skfddi.c
@@ -616,15 +616,10 @@ static int skfp_close(struct net_device *dev)
 
 irqreturn_t skfp_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct s_smc *smc;	/* private board structure pointer */
 	skfddi_priv *bp;
 
-	if (dev == NULL) {
-		printk("%s: irq %d for unknown device\n", dev->name, irq);
-		return IRQ_NONE;
-	}
-
 	smc = netdev_priv(dev);
 	bp = &smc->os;
 
diff --git a/drivers/net/sonic.c b/drivers/net/sonic.c
index cfece9676affbdef48ec1f7c20c450be637ca3ed..ed7aa0a5accad039fe5bca8e651bfca0246d5636 100644
--- a/drivers/net/sonic.c
+++ b/drivers/net/sonic.c
@@ -295,15 +295,10 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
  */
 static irqreturn_t sonic_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
+	struct net_device *dev = dev_id;
 	struct sonic_local *lp = netdev_priv(dev);
 	int status;
 
-	if (dev == NULL) {
-		printk(KERN_ERR "sonic_interrupt: irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
 	if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
 		return IRQ_NONE;
 
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
index 45d07faf7b96fa9524501eec36db576bfe9f30cf..9d7cd130c19db7b9946535e856bd6fb6d5773756 100644
--- a/drivers/net/sunhme.c
+++ b/drivers/net/sunhme.c
@@ -2095,8 +2095,8 @@ static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev)
 
 static irqreturn_t happy_meal_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
-	struct happy_meal *hp  = dev->priv;
+	struct net_device *dev = dev_id;
+	struct happy_meal *hp  = netdev_priv(dev);
 	u32 happy_status       = hme_read32(hp, hp->gregs + GREG_STAT);
 
 	HMD(("happy_meal_interrupt: status=%08x ", happy_status));
diff --git a/drivers/net/sunlance.c b/drivers/net/sunlance.c
index 9207e19cac349bfedfca0ce65f0ccfdee8a6a947..5b00d79b557376d6f63b143a8d3effd697b70294 100644
--- a/drivers/net/sunlance.c
+++ b/drivers/net/sunlance.c
@@ -822,7 +822,7 @@ static void lance_tx_pio(struct net_device *dev)
 
 static irqreturn_t lance_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct lance_private *lp = netdev_priv(dev);
 	int csr0;
 
diff --git a/drivers/net/sunqe.c b/drivers/net/sunqe.c
index 020e781705958b88c911b1e39df152cc02ef41d6..7874eb1ef04381edade7b85f7eb014705c54d2ed 100644
--- a/drivers/net/sunqe.c
+++ b/drivers/net/sunqe.c
@@ -468,7 +468,7 @@ static void qe_tx_reclaim(struct sunqe *qep);
  */
 static irqreturn_t qec_interrupt(int irq, void *dev_id)
 {
-	struct sunqec *qecp = (struct sunqec *) dev_id;
+	struct sunqec *qecp = dev_id;
 	u32 qec_status;
 	int channel = 0;
 
diff --git a/drivers/net/tokenring/smctr.c b/drivers/net/tokenring/smctr.c
index 9bd4cba8787238a652919b9fc13a9d2185f75241..46dabdb120716cf2bc2a0422b58e168b555edb99 100644
--- a/drivers/net/tokenring/smctr.c
+++ b/drivers/net/tokenring/smctr.c
@@ -1990,15 +1990,8 @@ static irqreturn_t smctr_interrupt(int irq, void *dev_id)
         __u8 isb_type, isb_subtype;
         __u16 isb_index;
 
-        if(dev == NULL)
-        {
-                printk(KERN_CRIT "%s: irq %d for unknown device.\n", dev->name, irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         tp = netdev_priv(dev);
-        
 
         if(tp->status == NOT_INITIALIZED)
                 return IRQ_NONE;
diff --git a/drivers/net/tokenring/tms380tr.c b/drivers/net/tokenring/tms380tr.c
index c0ab6e44eb1fe5edbb4e18af9d0b09af98a2f6e4..ea797ca2b9880096f36cb864518de4dc6ad64514 100644
--- a/drivers/net/tokenring/tms380tr.c
+++ b/drivers/net/tokenring/tms380tr.c
@@ -751,11 +751,6 @@ irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
 	unsigned short irq_type;
 	int handled = 0;
 
-	if(dev == NULL) {
-		printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
-		return IRQ_NONE;
-	}
-
 	tp = netdev_priv(dev);
 
 	irq_type = SIFREADW(SIFSTS);
diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c
index e17f9779ead2bab972b055a3f99dcf9322f6f4fd..3f4b6408b755ef6a3d2379329c0bffd4e2dbd36b 100644
--- a/drivers/net/tulip/de4x5.c
+++ b/drivers/net/tulip/de4x5.c
@@ -1540,16 +1540,12 @@ de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 de4x5_interrupt(int irq, void *dev_id)
 {
-    struct net_device *dev = (struct net_device *)dev_id;
+    struct net_device *dev = dev_id;
     struct de4x5_private *lp;
     s32 imr, omr, sts, limit;
     u_long iobase;
     unsigned int handled = 0;
 
-    if (dev == NULL) {
-	printk ("de4x5_interrupt(): irq %d for unknown device.\n", irq);
-	return IRQ_NONE;
-    }
     lp = netdev_priv(dev);
     spin_lock(&lp->lock);
     iobase = dev->base_addr;
diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
index 12363e056b63b83e6fb7a5655007bb119db4acd4..6e5f1c89851713f12ce45aaab040f36ca406d93d 100644
--- a/drivers/net/wan/cycx_main.c
+++ b/drivers/net/wan/cycx_main.c
@@ -303,9 +303,9 @@ out:	return ret;
  */
 static irqreturn_t cycx_isr(int irq, void *dev_id)
 {
-	struct cycx_device *card = (struct cycx_device *)dev_id;
+	struct cycx_device *card = dev_id;
 
-	if (!card || card->wandev.state == WAN_UNCONFIGURED)
+	if (card->wandev.state == WAN_UNCONFIGURED)
 		goto out;
 
 	if (card->in_isr) {
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
index 5715d25271f18ccd0f028efbe45e7c90cb172d55..6a485f0556f4b70a5815740f80a80cf457c8d8b0 100644
--- a/drivers/net/wan/sdla.c
+++ b/drivers/net/wan/sdla.c
@@ -875,13 +875,7 @@ static irqreturn_t sdla_isr(int irq, void *dev_id)
 
 	dev = dev_id;
 
-	if (dev == NULL)
-	{
-		printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
-	flp = dev->priv;
+	flp = netdev_priv(dev);
 
 	if (!flp->initialized)
 	{
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 793da5f6934468cc04565fb553c792cfabfe0178..b779c7dcc1a84b55e7eafa8285b3038fc015ad2e 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -1954,7 +1954,7 @@ static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
 
 irqreturn_t orinoco_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct orinoco_private *priv = netdev_priv(dev);
 	hermes_t *hw = &priv->hw;
 	int count = MAX_IRQLOOPS_PER_IRQ;
diff --git a/drivers/net/wireless/wavelan_cs.c b/drivers/net/wireless/wavelan_cs.c
index cadfe132db840a3ef2294343b42acee2d7fa5b4e..aafb301041b124f03d672cedf2c30f4fb3472a47 100644
--- a/drivers/net/wireless/wavelan_cs.c
+++ b/drivers/net/wireless/wavelan_cs.c
@@ -4119,21 +4119,12 @@ static irqreturn_t
 wavelan_interrupt(int		irq,
 		  void *	dev_id)
 {
-  struct net_device *	dev;
+  struct net_device *	dev = dev_id;
   net_local *	lp;
   kio_addr_t	base;
   int		status0;
   u_int		tx_status;
 
-  if ((dev = dev_id) == NULL)
-    {
-#ifdef DEBUG_INTERRUPT_ERROR
-      printk(KERN_WARNING "wavelan_interrupt(): irq %d for unknown device.\n",
-	     irq);
-#endif
-      return IRQ_NONE;
-    }
-
 #ifdef DEBUG_INTERRUPT_TRACE
   printk(KERN_DEBUG "%s: ->wavelan_interrupt()\n", dev->name);
 #endif
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
index a1430352169b7764a2d51052ff30a2324c3ba609..5b98a7876982a528e56f819016457bc4359a6d54 100644
--- a/drivers/net/wireless/wl3501_cs.c
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -1155,25 +1155,18 @@ static inline void wl3501_ack_interrupt(struct wl3501_card *this)
  */
 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct wl3501_card *this;
-	int handled = 1;
 
-	if (!dev)
-		goto unknown;
-	this = dev->priv;
+	this = netdev_priv(dev);
 	spin_lock(&this->lock);
 	wl3501_ack_interrupt(this);
 	wl3501_block_interrupt(this);
 	wl3501_rx_interrupt(dev);
 	wl3501_unblock_interrupt(this);
 	spin_unlock(&this->lock);
-out:
-	return IRQ_RETVAL(handled);
-unknown:
-	handled = 0;
-	printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq);
-	goto out;
+
+	return IRQ_HANDLED;
 }
 
 static int wl3501_reset_board(struct wl3501_card *this)
diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c
index ac600212d9a92e80f2eba32cf3bd175bd08dc326..2412ce4917f26ee9143eb07a5153fc168bb77112 100644
--- a/drivers/net/yellowfin.c
+++ b/drivers/net/yellowfin.c
@@ -896,13 +896,6 @@ static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance)
 	int boguscnt = max_interrupt_work;
 	unsigned int handled = 0;
 
-#ifndef final_version			/* Can never occur. */
-	if (dev == NULL) {
-		printk (KERN_ERR "yellowfin_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-#endif
-
 	yp = netdev_priv(dev);
 	ioaddr = yp->base;
 
diff --git a/drivers/net/znet.c b/drivers/net/znet.c
index 2068a109a86ce8b29d4453c869e7f60479f80017..b24b0727108c037c509c1a2395116d34e1ab543d 100644
--- a/drivers/net/znet.c
+++ b/drivers/net/znet.c
@@ -610,11 +610,6 @@ static irqreturn_t znet_interrupt(int irq, void *dev_id)
 	int boguscnt = 20;
 	int handled = 0;
 
-	if (dev == NULL) {
-		printk(KERN_WARNING "znet_interrupt(): IRQ %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
 	spin_lock (&znet->lock);
 
 	ioaddr = dev->base_addr;
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 991e084db2d649a102e8bc3502bf735ea7dfea0b..7f5df9a9f3932c65df09fec78251fc0d7317ccb8 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -66,7 +66,7 @@ static int at91_cf_ss_init(struct pcmcia_socket *s)
 
 static irqreturn_t at91_cf_irq(int irq, void *_cf)
 {
-	struct at91_cf_socket	*cf = (struct at91_cf_socket *) _cf;
+	struct at91_cf_socket *cf = _cf;
 
 	if (irq == cf->board->det_pin) {
 		unsigned present = at91_cf_present(cf);
diff --git a/drivers/pcmcia/hd64465_ss.c b/drivers/pcmcia/hd64465_ss.c
index db3c26b5de14f38ab410d1e332679e3aeb8f034a..caca0dc9d30f74f4d05adc50444e927a48e202a9 100644
--- a/drivers/pcmcia/hd64465_ss.c
+++ b/drivers/pcmcia/hd64465_ss.c
@@ -650,7 +650,7 @@ static int hs_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
  */
 static int hs_irq_demux(int irq, void *dev)
 {
-    	hs_socket_t *sp = (hs_socket_t *)dev;
+    	hs_socket_t *sp = dev;
 	u_int cscr;
     	
     	DPRINTK("hs_irq_demux(irq=%d)\n", irq);
@@ -673,11 +673,10 @@ static int hs_irq_demux(int irq, void *dev)
  
 static irqreturn_t hs_interrupt(int irq, void *dev)
 {
-    	hs_socket_t *sp = (hs_socket_t *)dev;
+    	hs_socket_t *sp = dev;
 	u_int events = 0;
 	u_int cscr;
-	
-	
+
 	cscr = hs_in(sp, CSCR);
 	
 	DPRINTK("hs_interrupt, cscr=%04x\n", cscr);
diff --git a/drivers/scsi/NCR53c406a.c b/drivers/scsi/NCR53c406a.c
index 3896278594c765c744bfa086eca292bfde75148d..d4613815f685d26115808d1887223e3c8d7b2e96 100644
--- a/drivers/scsi/NCR53c406a.c
+++ b/drivers/scsi/NCR53c406a.c
@@ -168,7 +168,7 @@ enum Phase {
 };
 
 /* Static function prototypes */
-static void NCR53c406a_intr(int, void *);
+static void NCR53c406a_intr(void *);
 static irqreturn_t do_NCR53c406a_intr(int, void *);
 static void chip_init(void);
 static void calc_port_addr(void);
@@ -685,7 +685,7 @@ static void wait_intr(void)
 		return;
 	}
 
-	NCR53c406a_intr(0, NULL, NULL);
+	NCR53c406a_intr(NULL);
 }
 #endif
 
@@ -767,12 +767,12 @@ static irqreturn_t do_NCR53c406a_intr(int unused, void *dev_id)
 	struct Scsi_Host *dev = dev_id;
 
 	spin_lock_irqsave(dev->host_lock, flags);
-	NCR53c406a_intr(0, dev_id);
+	NCR53c406a_intr(dev_id);
 	spin_unlock_irqrestore(dev->host_lock, flags);
 	return IRQ_HANDLED;
 }
 
-static void NCR53c406a_intr(int unused, void *dev_id)
+static void NCR53c406a_intr(void *dev_id)
 {
 	DEB(unsigned char fifo_size;
 	    )
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index e04c2bc1932b011c17bceeae5efda6c1c6497aa7..a0d1cee0be77540691637566def3b862631e1829 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -759,12 +759,7 @@ static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
 
 static irqreturn_t swintr(int irqno, void *dev_id)
 {
-	struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
-
-	if (!shpnt) {
-        	printk(KERN_ERR "aha152x: catched software interrupt %d for unknown controller.\n", irqno);
-		return IRQ_NONE;
-	}
+	struct Scsi_Host *shpnt = dev_id;
 
 	HOSTDATA(shpnt)->swint++;
 
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 7f0adf9c4c7ef8bd29a9b06e015f36d05c9f270d..bcd7fffab9074fbb2ab5fab1768bd5ec686657a5 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -6345,12 +6345,12 @@ aic7xxx_handle_command_completion_intr(struct aic7xxx_host *p)
  *   SCSI controller interrupt handler.
  *-F*************************************************************************/
 static void
-aic7xxx_isr(int irq, void *dev_id)
+aic7xxx_isr(void *dev_id)
 {
   struct aic7xxx_host *p;
   unsigned char intstat;
 
-  p = (struct aic7xxx_host *)dev_id;
+  p = dev_id;
 
   /*
    * Just a few sanity checks.  Make sure that we have an int pending.
@@ -6489,7 +6489,7 @@ do_aic7xxx_isr(int irq, void *dev_id)
   p->flags |= AHC_IN_ISR;
   do
   {
-    aic7xxx_isr(irq, dev_id);
+    aic7xxx_isr(dev_id);
   } while ( (aic_inb(p, INTSTAT) & INT_PEND) );
   aic7xxx_done_cmds_complete(p);
   aic7xxx_run_waiting_queues(p);
@@ -10377,7 +10377,7 @@ static int __aic7xxx_bus_device_reset(struct scsi_cmnd *cmd)
 
   hscb = scb->hscb;
 
-  aic7xxx_isr(p->irq, (void *)p);
+  aic7xxx_isr(p);
   aic7xxx_done_cmds_complete(p);
   /* If the command was already complete or just completed, then we didn't
    * do a reset, return FAILED */
@@ -10608,7 +10608,7 @@ static int __aic7xxx_abort(struct scsi_cmnd *cmd)
   else
     return FAILED;
 
-  aic7xxx_isr(p->irq, (void *)p);
+  aic7xxx_isr(p);
   aic7xxx_done_cmds_complete(p);
   /* If the command was already complete or just completed, then we didn't
    * do a reset, return FAILED */
@@ -10863,7 +10863,7 @@ static int aic7xxx_reset(struct scsi_cmnd *cmd)
 
   while((aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
   {
-    aic7xxx_isr(p->irq, p);
+    aic7xxx_isr(p);
     pause_sequencer(p);
   }
   aic7xxx_done_cmds_complete(p);
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 81e3ee51d897625d9b491706050f9546ed68e9a2..23f5e418ab55b269514d680bb4056d75a62a080e 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1815,7 +1815,7 @@ static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb,
 
 static irqreturn_t dc395x_interrupt(int irq, void *dev_id)
 {
-	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)dev_id;
+	struct AdapterCtlBlk *acb = dev_id;
 	u16 scsi_status;
 	u8 dma_status;
 	irqreturn_t handled = IRQ_NONE;
diff --git a/drivers/scsi/qlogicfas408.c b/drivers/scsi/qlogicfas408.c
index 1a7de3bd796f8cfebe4953b193c46ad4796e3c0d..e0725353c99cdaf18e7f1708ada202348ca1977c 100644
--- a/drivers/scsi/qlogicfas408.c
+++ b/drivers/scsi/qlogicfas408.c
@@ -405,10 +405,10 @@ static unsigned int ql_pcmd(Scsi_Cmnd * cmd)
  *	Interrupt handler 
  */
 
-static void ql_ihandl(int irq, void *dev_id)
+static void ql_ihandl(void *dev_id)
 {
 	Scsi_Cmnd *icmd;
-	struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
+	struct Scsi_Host *host = dev_id;
 	struct qlogicfas408_priv *priv = get_priv_by_host(host);
 	int qbase = priv->qbase;
 	REG0;
@@ -438,7 +438,7 @@ irqreturn_t qlogicfas408_ihandl(int irq, void *dev_id)
 	struct Scsi_Host *host = dev_id;
 
 	spin_lock_irqsave(host->host_lock, flags);
-	ql_ihandl(irq, dev_id);
+	ql_ihandl(dev_id);
 	spin_unlock_irqrestore(host->host_lock, flags);
 	return IRQ_HANDLED;
 }
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index 0f0ac925d319a77e8af1ba324f545013fee51f09..d03aa6ce8fe8afef715018917d257daad01b31ab 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -700,9 +700,9 @@ dc390_InvalidCmd(struct dc390_acb* pACB)
 
 
 static irqreturn_t __inline__
-DC390_Interrupt(int irq, void *dev_id)
+DC390_Interrupt(void *dev_id)
 {
-    struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
+    struct dc390_acb *pACB = dev_id;
     struct dc390_dcb *pDCB;
     struct dc390_srb *pSRB;
     u8  sstatus=0;
@@ -811,12 +811,12 @@ DC390_Interrupt(int irq, void *dev_id)
     return IRQ_HANDLED;
 }
 
-static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id)
+static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
 {
     irqreturn_t ret;
     DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
     /* Locking is done in DC390_Interrupt */
-    ret = DC390_Interrupt(irq, dev_id);
+    ret = DC390_Interrupt(dev_id);
     DEBUG1(printk (".. IRQ returned\n"));
     return ret;
 }
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index 107f0fc34949b725a4ee1d26330e988e64689ff1..56906aba5ee351ffce54935f69acaaae7a19c5a7 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -287,7 +287,7 @@ static const unsigned short ultrastor_ports_14f[] = {
 };
 #endif
 
-static void ultrastor_interrupt(int, void *);
+static void ultrastor_interrupt(void *);
 static irqreturn_t do_ultrastor_interrupt(int, void *);
 static inline void build_sg_list(struct mscp *, struct scsi_cmnd *SCpnt);
 
@@ -893,7 +893,7 @@ static int ultrastor_abort(struct scsi_cmnd *SCpnt)
 	
 	spin_lock_irqsave(host->host_lock, flags);
 	/* FIXME: Ewww... need to think about passing host around properly */
-	ultrastor_interrupt(0, NULL);
+	ultrastor_interrupt(NULL);
 	spin_unlock_irqrestore(host->host_lock, flags);
 	return SUCCESS;
       }
@@ -1039,7 +1039,7 @@ int ultrastor_biosparam(struct scsi_device *sdev, struct block_device *bdev,
     return 0;
 }
 
-static void ultrastor_interrupt(int irq, void *dev_id)
+static void ultrastor_interrupt(void *dev_id)
 {
     unsigned int status;
 #if ULTRASTOR_MAX_CMDS > 1
@@ -1177,7 +1177,7 @@ static irqreturn_t do_ultrastor_interrupt(int irq, void *dev_id)
     struct Scsi_Host *dev = dev_id;
     
     spin_lock_irqsave(dev->host_lock, flags);
-    ultrastor_interrupt(irq, dev_id);
+    ultrastor_interrupt(dev_id);
     spin_unlock_irqrestore(dev->host_lock, flags);
     return IRQ_HANDLED;
 }
diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c
index 4e56ec803861a5aaf3b58a8617a770ca4ea671a2..634ecca36a7737d19397ea9b32d2d6636a6fc65a 100644
--- a/drivers/serial/68360serial.c
+++ b/drivers/serial/68360serial.c
@@ -620,7 +620,7 @@ static void rs_360_interrupt(int vec, void *dev_id)
 	volatile struct smc_regs *smcp;
 	volatile struct scc_regs *sccp;
 	
-	info = (ser_info_t *)dev_id;
+	info = dev_id;
 
 	idx = PORT_NUM(info->state->smc_scc_num);
 	if (info->state->smc_scc_num & NUM_IS_SCC) {
diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c
index 8fa31e68989ae911b6ad5ea386ac5f205efdfa45..8be8da37f629b86418d6d9a4ee671cbc8c975878 100644
--- a/drivers/serial/jsm/jsm_neo.c
+++ b/drivers/serial/jsm/jsm_neo.c
@@ -1116,7 +1116,7 @@ static void neo_param(struct jsm_channel *ch)
  */
 static irqreturn_t neo_intr(int irq, void *voidbrd)
 {
-	struct jsm_board *brd = (struct jsm_board *) voidbrd;
+	struct jsm_board *brd = voidbrd;
 	struct jsm_channel *ch;
 	int port = 0;
 	int type = 0;
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index 039c2fd6d496e86dc4d98f2a4de6b3207114cf9e..4f80c5b4a7533590ad6a51a22708d868fb43fdec 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -512,19 +512,11 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
 static irqreturn_t 
 mpc52xx_uart_int(int irq, void *dev_id)
 {
-	struct uart_port *port = (struct uart_port *) dev_id;
+	struct uart_port *port = dev_id;
 	unsigned long pass = ISR_PASS_LIMIT;
 	unsigned int keepgoing;
 	unsigned short status;
 	
-	if ( irq != port->irq ) {
-		printk( KERN_WARNING
-		        "mpc52xx_uart_int : " \
-		        "Received wrong int %d. Waiting for %d\n",
-		       irq, port->irq);
-		return IRQ_NONE;
-	}
-	
 	spin_lock(&port->lock);
 	
 	/* While we have stuff to do, we continue */
diff --git a/drivers/serial/netx-serial.c b/drivers/serial/netx-serial.c
index e92d7e1c22cf331e70d38c878ec3413115b44097..062bad457b1a6775c5566e6a311a2e09798cb642 100644
--- a/drivers/serial/netx-serial.c
+++ b/drivers/serial/netx-serial.c
@@ -247,7 +247,7 @@ static void netx_rxint(struct uart_port *port)
 
 static irqreturn_t netx_int(int irq, void *dev_id)
 {
-	struct uart_port *port = (struct uart_port *)dev_id;
+	struct uart_port *port = dev_id;
 	unsigned long flags;
 	unsigned char status;
 
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 846089f222d4e788a92d2a2bd3f8d143f6b56f6f..415fe9633a9b7ce81cddade5929a71b72fd12370 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -232,7 +232,7 @@ static inline void check_modem_status(struct uart_pxa_port *up)
  */
 static inline irqreturn_t serial_pxa_irq(int irq, void *dev_id)
 {
-	struct uart_pxa_port *up = (struct uart_pxa_port *)dev_id;
+	struct uart_pxa_port *up = dev_id;
 	unsigned int iir, lsr;
 
 	iir = serial_in(up, UART_IIR);
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index 3d91b6b9287d82099a275ab570a22602a2994294..cd6b65333b71a51660471128e4128dd8d90116dc 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -401,7 +401,7 @@ static inline uint32_t get_pending_intrs(struct ioc3_driver_data *idd)
 static irqreturn_t ioc3_intr_io(int irq, void *arg)
 {
 	unsigned long flags;
-	struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg;
+	struct ioc3_driver_data *idd = arg;
 	int handled = 1, id;
 	unsigned int pending;
 
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index 77122edeb206cdb90ab0051549f32ab7d4b888ec..72025df5561d5baa7836d58c2ea073e8f25728df 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -669,7 +669,7 @@ static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 
 static irqreturn_t ssp_int(int irq, void *dev_id)
 {
-	struct driver_data *drv_data = (struct driver_data *)dev_id;
+	struct driver_data *drv_data = dev_id;
 	void *reg = drv_data->ioaddr;
 
 	if (!drv_data->cur_msg) {
diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index 52498c9d411e0065798fcce054914cde98af33fe..c1c69e3cbfd040c3ee7636d0a7c0feec6a6fac8a 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -107,7 +107,7 @@ static int __init snd_gusmax_detect(struct snd_gus_card * gus)
 
 static irqreturn_t snd_gusmax_interrupt(int irq, void *dev_id)
 {
-	struct snd_gusmax *maxcard = (struct snd_gusmax *) dev_id;
+	struct snd_gusmax *maxcard = dev_id;
 	int loop, max = 5;
 	int handled = 0;
 
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index 5c474b831edc2d066ace90c0969ca22f32251fef..f12cd09d1fccb0b3ed9fdc5291283b3413636fc3 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -301,7 +301,7 @@ static int __devinit snd_interwave_detect(struct snd_interwave *iwcard,
 
 static irqreturn_t snd_interwave_interrupt(int irq, void *dev_id)
 {
-	struct snd_interwave *iwcard = (struct snd_interwave *) dev_id;
+	struct snd_interwave *iwcard = dev_id;
 	int loop, max = 5;
 	int handled = 0;
 
diff --git a/sound/oss/es1371.c b/sound/oss/es1371.c
index 2562f4769b90cdcaa4680c33ef19025ee0789613..ddf6b0a0bca5a1c363bf9c58378e51aa5e73cf6c 100644
--- a/sound/oss/es1371.c
+++ b/sound/oss/es1371.c
@@ -1102,7 +1102,7 @@ static void es1371_handle_midi(struct es1371_state *s)
 
 static irqreturn_t es1371_interrupt(int irq, void *dev_id)
 {
-        struct es1371_state *s = (struct es1371_state *)dev_id;
+        struct es1371_state *s = dev_id;
 	unsigned int intsrc, sctl;
 	
 	/* fastpath out, to ease interrupt sharing */
diff --git a/sound/oss/hal2.c b/sound/oss/hal2.c
index 7807abac0625ccab143918a94254e2c9c3d3f93f..784bdd707055ede1e4ae3cdf176fd3ba262e26d1 100644
--- a/sound/oss/hal2.c
+++ b/sound/oss/hal2.c
@@ -372,7 +372,7 @@ static void hal2_adc_interrupt(struct hal2_codec *adc)
 
 static irqreturn_t hal2_interrupt(int irq, void *dev_id)
 {
-	struct hal2_card *hal2 = (struct hal2_card*)dev_id;
+	struct hal2_card *hal2 = dev_id;
 	irqreturn_t ret = IRQ_NONE;
 
 	/* decide what caused this interrupt */
diff --git a/sound/oss/i810_audio.c b/sound/oss/i810_audio.c
index a48af879b46665f06b7ee298d8937c1b69d286b1..240cc7939b69e6137ca8adfd33f4d6c44b8d172f 100644
--- a/sound/oss/i810_audio.c
+++ b/sound/oss/i810_audio.c
@@ -1525,7 +1525,7 @@ static void i810_channel_interrupt(struct i810_card *card)
 
 static irqreturn_t i810_interrupt(int irq, void *dev_id)
 {
-	struct i810_card *card = (struct i810_card *)dev_id;
+	struct i810_card *card = dev_id;
 	u32 status;
 
 	spin_lock(&card->lock);
diff --git a/sound/oss/mpu401.c b/sound/oss/mpu401.c
index 58d4a5d05a277f7651beac31686c8d5e09d05035..e96220541971498a0c25c31f98ebb36cc11d6f6f 100644
--- a/sound/oss/mpu401.c
+++ b/sound/oss/mpu401.c
@@ -435,7 +435,7 @@ static void mpu401_input_loop(struct mpu_config *devc)
 static irqreturn_t mpuintr(int irq, void *dev_id)
 {
 	struct mpu_config *devc;
-	int dev = (int) dev_id;
+	int dev = (int)(unsigned long) dev_id;
 	int handled = 0;
 
 	devc = &dev_conf[dev];
diff --git a/sound/oss/vwsnd.c b/sound/oss/vwsnd.c
index 0cd4d6ec9862129ebcd10cc359888dabc9eb6cf1..6dfb9f4b03ec9c0fae1df528ec9245f226ab50ed 100644
--- a/sound/oss/vwsnd.c
+++ b/sound/oss/vwsnd.c
@@ -2235,7 +2235,7 @@ static void vwsnd_audio_write_intr(vwsnd_dev_t *devc, unsigned int status)
 
 static irqreturn_t vwsnd_audio_intr(int irq, void *dev_id)
 {
-	vwsnd_dev_t *devc = (vwsnd_dev_t *) dev_id;
+	vwsnd_dev_t *devc = dev_id;
 	unsigned int status;
 
 	DBGEV("(irq=%d, dev_id=0x%p)\n", irq, dev_id);
diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c
index 398aa10a06e862a537732dacbea05dc84343e41a..fa8cd8cecc21ab3691493a7b8da16c72480e1131 100644
--- a/sound/pci/korg1212/korg1212.c
+++ b/sound/pci/korg1212/korg1212.c
@@ -1124,9 +1124,6 @@ static irqreturn_t snd_korg1212_interrupt(int irq, void *dev_id)
         u32 doorbellValue;
         struct snd_korg1212 *korg1212 = dev_id;
 
-	if(irq != korg1212->irq)
-		return IRQ_NONE;
-
         doorbellValue = readl(korg1212->inDoorbellPtr);
 
         if (!doorbellValue)
@@ -1140,7 +1137,6 @@ static irqreturn_t snd_korg1212_interrupt(int irq, void *dev_id)
 
 	korg1212->inIRQ++;
 
-
         switch (doorbellValue) {
                 case K1212_DB_DSPDownloadDone:
                         K1212_DEBUG_PRINTK("K1212_DEBUG: IRQ DNLD count - %ld, %x, [%s].\n",