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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-08-07 18:53:03 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-08-07 18:53:06 +0200 |
| commit | 5e25c6f9752ca3ecd1b37ace655e46e27d0a6e30 (patch) | |
| tree | e0e9872d9ef5cc8c319442637d3a7dd6029ea606 /arch/arm/include | |
| parent | 017d5ca933ca2745d577ad4698f6ac884b43c36f (diff) | |
| download | barebox-5e25c6f9752ca3ecd1b37ace655e46e27d0a6e30.tar.gz barebox-5e25c6f9752ca3ecd1b37ace655e46e27d0a6e30.tar.xz | |
ARM: add missing volatile in get_cr()
Without it, the compiler optimizes away subsequent reads of the
control register.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/system.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 77d63054ce..1d67492477 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -59,7 +59,7 @@ static inline unsigned int get_cr(void) { unsigned int val; - asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc"); + asm volatile ("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc"); return val; } |