Commit 16a3f41f authored by ruanjinjie's avatar ruanjinjie Committed by Michael Ellerman
Browse files

powerpc/mpic_msgr: fix cast removes address space of expression warnings 



When build Linux kernel, encounter the following warnings:

./arch/powerpc/sysdev/mpic_msgr.c:230:38: warning: cast removes address space '__iomem' of expression
./arch/powerpc/sysdev/mpic_msgr.c:230:27: warning: incorrect type in assignment (different address spaces)

The data type of msgr->mer and msgr->base are 'u32 __iomem *', but
converted to 'u32 *' and 'u8 *' directly and cause above warnings, now
instead of using a type cast, change the size of the pointer offset to fix
these warnings.

Signed-off-by: default avatarruanjinjie <ruanjinjie@huawei.com>
Reviewed-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221019063414.3758087-1-ruanjinjie@huawei.com
parent 8b49670f

arch/powerpc/sysdev/mpic_msgr.c

+2 −2
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ 


#define MPIC_MSGR_REGISTERS_PER_BLOCK	4

#define MPIC_MSGR_STRIDE		0x10

#define MPIC_MSGR_MER_OFFSET		0x100

#define MPIC_MSGR_MER_OFFSET		(0x100 / sizeof(u32))

#define MSGR_INUSE			0

#define MSGR_FREE			1
@@ -234,7 +234,7 @@ static int mpic_msgr_probe(struct platform_device *dev) 


		reg_number = block_number * MPIC_MSGR_REGISTERS_PER_BLOCK + i;

		msgr->base = msgr_block_addr + i * MPIC_MSGR_STRIDE;

		msgr->mer = (u32 *)((u8 *)msgr->base + MPIC_MSGR_MER_OFFSET);

		msgr->mer = msgr->base + MPIC_MSGR_MER_OFFSET;

		msgr->in_use = MSGR_FREE;

		msgr->num = i;

		raw_spin_lock_init(&msgr->lock);