- Mar 30, 2008
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Al Viro authored
Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- Mar 11, 2008
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Yutaro Ebihara authored
There was an off-by-1 in the SCRFDR calculation that caused writes over 128-bytes to hang in the FIFO. Fix it up. Signed-off-by:
Yutaro Ebihara <ebiharaml@si-linux.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org>
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Josh Boyer authored
Fix the following section mismatches: WARNING: drivers/built-in.o(.exit.text+0x5a): Section mismatch in reference from the function of_platform_serial_exit() to the variable .devinit.data:of_platform_serial_driver The function __exit of_platform_serial_exit() references a variable __devinitdata of_platform_serial_driver. Signed-off-by:
Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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- Mar 05, 2008
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Julia Lawall authored
In commit e6bafba5 ("wmi: (!x & y) strikes again"), a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. This is not tested and clearly changes the semantics, so it is only something to consider. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/ ) // <smpl> @@ expression E1,E2; @@ ( !E1 & !E2 | - !E1 & E2 + !(E1 & E2) ) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Bjorn Helgaas authored
Thomas Lehmann <thomas.lehmann@alumni.tu-berlin.de> verified that this entry works. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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- Feb 29, 2008
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Sonic Zhang authored
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3910 Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
Bryan Wu <cooloney@kernel.org>
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- Feb 26, 2008
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Paul Mundt authored
This header is needed on other architectures as well (namely h8300), which currently fails to build without this in place. Rather than duplicating the port definition completely there, just move this to a common location instead. This should get h8300 working again for 2.6.25, in addition to the changes already pushed by Sato-san in -rc2. Signed-off-by:
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- Feb 25, 2008
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Sonic Zhang authored
Also make rx dma buffer work as a loop. Signed-off-by:
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Sonic Zhang authored
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=2920 Signed-off-by:
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- Feb 24, 2008
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Haavard Skinnemoen authored
We should only return IRQ_HANDLED when we actually found something to handle. This is important since the USART interrupt handler may be shared with the timer interrupt on some chips. Pointed-out-by:
michael <trimarchi@gandalf.sssup.it> Signed-off-by:
Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by:
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- Feb 14, 2008
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Paul Mundt authored
asm/hardware.h doesn't exist any more, and the definitions sh-sci.h depended on are provided through asm/cpu/addrspace.h these days. Kill off the bogus include. Signed-off-by: -
Magnus Damm authored
This patch adds sh7366 cpu supports. Just the most basic things like interrupt controller, clocks and serial port are included at this point. Signed-off-by:
Magnus Damm <damm@igel.co.jp> Signed-off-by:
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- Feb 08, 2008
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Denis Cheng authored
There is an outdated comment in serial_core.c also fixed. Signed-off-by:
Denis Cheng <crquan@gmail.com> Signed-off-by:
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Haavard Skinnemoen authored
When possible, pass the tty name to request_irq() so that the user can easily distinguish the different serial ports in /proc/interrupts. Signed-off-by:
Marc Pignat <marc.pignat@hevs.ch> Signed-off-by:
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Haavard Skinnemoen authored
As pointed out by David Brownell, we really ought to be using container_of when converting from "struct uart_port *" to "struct atmel_uart_port *". Signed-off-by:
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Haavard Skinnemoen authored
Introduced by atmel_serial-split-the-interrupt-handler.patch. Thanks to michael <trimarchi@gandalf.sssup.it> for spotting it. Signed-off-by:
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Chip Coldwell authored
This patch is based on the DMA-patch by Chip Coldwell for the AT91/AT32 serial USARTS, with some tweaks to make it apply neatly on top of the other patches in this series. The RX and TX code has been moved to a tasklet and reworked a bit. Instead of depending on the ENDRX and TIMEOUT bits in CSR, we simply grab as much data as we can from the DMA buffers. I think this closes a race where the ENDRX bit is set after we read CSR but before we read RPR, although I haven't confirmed this. Similarly, the two TX handlers (ENDTX and TXBUFE) have been combined into one. Since the current code only uses a single TX buffer, there's no point in handling those interrupts separately. This also fixes a DMA sync bug in the original patch. [linux@bohmer.net: rebased onto irq-splitup patch] [hskinnemoen@atmel.com: moved to tasklet, fixed dma bug, misc cleanups] [hskinnemoen@atmel.com: atmel_serial dma: Misc fixes and cleanups] Signed-off-by:
Remy Bohmer <linux@bohmer.net> Signed-off-by:
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Remy Bohmer authored
Split up the interrupt handler of the serial port into a interrupt top-half and a tasklet. The goal is to get the interrupt top-half as short as possible to minimize latencies on interrupts. But the old code also does some calls in the interrupt handler that are not allowed on preempt-RT in IRQF_NODELAY context. This handler is executed in this context because of the interrupt sharing with the timer interrupt. The timer interrupt on Preempt-RT runs in IRQF_NODELAY context. The tasklet takes care of handling control status changes, pushing incoming characters to the tty layer, handling break and other errors. It also handles pushing TX data into the data register. Reading the complete receive queue is still done in the top-half because we never want to miss any incoming character. [hskinnemoen@atmel.com: misc cleanups and simplifications] Signed-off-by:
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Haavard Skinnemoen authored
When an error happens in probe(), the clocks should be disabled, but only if the port isn't already used as a console. In remove(), the port struct shouldn't be freed because it's defined statically. Signed-off-by:
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Haavard Skinnemoen authored
If BRGR is zero, the baud rate generator isn't running, so the boot loader can't have initialized the port. Signed-off-by:
Andrew Victor <linux@maxim.org.za> Tested-by:
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Haavard Skinnemoen authored
Replace two instances of barrier() with cpu_relax() since that's the right thing to do when busy-waiting. This does not actually change anything since cpu_relax() is defined as barrier() on both ARM and AVR32. Signed-off-by:
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Remy Bohmer authored
Clean up the atmel_serial driver to conform the coding rules. It contains no functional change. Signed-off-by:
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Alan Cox authored
Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Alan Cox authored
Signed-off-by:
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- Feb 07, 2008
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Jiri Slaby authored
Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Maciej W. Rozycki authored
This is a set of changes to implement proper resource management in the driver, including iomem space reservation and operating on physical addresses ioremap()ped appropriately using accessory functions rather than unportable direct assignments. Some adjustments to code are made to reflect the architecture of the interface, which is a centrally controlled multiport (or, as referred to from DEC documentation, a serial line multiplexer, going up to 8 lines originally) rather than a bundle of separate ports. Types are changed, where applicable, to specify the width of hardware registers explicitly. The interrupt handler is now managed in the ->startup() and ->shutdown() calls for consistency with other drivers and also in preparation to handle the handover from the initial firmware-based console gracefully. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Maciej W. Rozycki authored
Replace all casts from "struct uart_port *" to "struct dz_port *" with a construct based on container_of(). This makes the conversion work irrespective of where the former struct is located within the latter. By popular request I have implemented it as an inline function rather than a macro this time. Signed-off-by:
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Maciej W. Rozycki authored
A set of changes to the way termios settings are propagated to the serial port hardware. The DZ11 only supports a selection of fixed baud settings, so some requests may not be fulfilled. Keep the old setting in such a case and failing that resort to 9600bps. Also add a missing update of the transmit timeout. And remove the explicit encoding of the line selected from writes to the Line Parameters Register as it has been preencoded by the ->set_termios() call already. Finally, remove a duplicate macro for the Receiver Enable bit. Signed-off-by:
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Maciej W. Rozycki authored
Handle the read and ignore status masks correctly. Handle the BREAK condition as expected: a framing error with a null character is a BREAK, any other framing error is a framing error indeed. Signed-off-by:
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Maciej W. Rozycki authored
The ->start_tx(), ->stop_tx() and ->stop_rx() backends are called with the port's lock already taken. Remove locking from within them and wrap around calls as necessary. Signed-off-by:
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Maciej W. Rozycki authored
Rename the serial console structure so that `modpost' does not complain about a reference to an "init" section -- "_console" is magic. Signed-off-by:
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Maciej W. Rozycki authored
Reformat the Kconfig entries and update descriptions for accuracy. Select the driver by default for configurations of interest. For the curious: 32BIT means only 32-bit DECstations support the device, not that the driver is not 64-bit clean; I have not checked that either though. Signed-off-by:
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Maciej W. Rozycki authored
Sort the header inclusions, add a few that are needed but pulled indirectly only and remove ones that are not really used. Signed-off-by:
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Maciej W. Rozycki authored
Well, panic() is a little bit undue if request_irq() fails; there is probably no need to justify it any further. Handle the case gracefully, by unregistering the driver. Signed-off-by:
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