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MIPS: signal.c: Fix an invalid cast in ISA mode bit handling

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Fix:

arch/mips/kernel/signal.c: In function 'handle_signal':
arch/mips/kernel/signal.c:533:21: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
  unsigned int tmp = (unsigned int)current->mm->context.vdso;
                     ^
arch/mips/kernel/signal.c:536:9: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
  vdso = (void *)tmp;
         ^
cc1: all warnings being treated as errors

when building a 64-bit kernel.

This is not really a supported configuration, but the cast is wrong
either way, Linux makes the assumption that sizeof(void *) equals
sizeof(unsigned long) and therefore the latter type is expected to be
used where integer operations have to be applied to pointers for some
reason.

Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8480/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Maciej W. Rozycki 2014-11-15 22:08:09 +00:00 committed by Ralf Baechle
parent c441d4a54c
commit 2fabc7d25d
1 changed files with 1 additions and 1 deletions
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2
arch/mips/kernel/signal.c
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@ -530,7 +530,7 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
struct mips_abi *abi = current->thread.abi;
#ifdef CONFIG_CPU_MICROMIPS
void *vdso;
unsigned int tmp = (unsigned int)current->mm->context.vdso;
unsigned long tmp = (unsigned long)current->mm->context.vdso;
set_isa16_mode(tmp);
vdso = (void *)tmp;