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| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2010-10-22 18:55:39 +0200 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2010-10-26 11:32:48 +0200 |
| commit | a2a571b74a3881963d8d09deb272d13afe5b49e3 (patch) | |
| tree | 491cf5ff56293287906f9cfec785345f24cd2180 /arch/arm/mach-at91/pm.h | |
| parent | AT91: pm: use plain cpu_do_idle() for "wait for interrupt" (diff) | |
| download | linux-a2a571b74a3881963d8d09deb272d13afe5b49e3.tar.xz linux-a2a571b74a3881963d8d09deb272d13afe5b49e3.zip | |
AT91: pm: make sure that r0 is 0 when dealing with cache operations
When using CP15 cache operations (c7), we make sure that Rd (r0)
is actually 0 as ARM 926 TRM is saying.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/pm.h')
| -rw-r--r-- | arch/arm/mach-at91/pm.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h index 2c4424bfa6c4..ce9a20699111 100644 --- a/arch/arm/mach-at91/pm.h +++ b/arch/arm/mach-at91/pm.h @@ -21,7 +21,8 @@ static inline u32 sdram_selfrefresh_enable(void) } #define sdram_selfrefresh_disable(saved_lpr) at91_sys_write(AT91_SDRAMC_LPR, saved_lpr) -#define wait_for_interrupt_enable() asm("mcr p15, 0, r0, c7, c0, 4") +#define wait_for_interrupt_enable() asm volatile ("mcr p15, 0, %0, c7, c0, 4" \ + : : "r" (0)) #elif defined(CONFIG_ARCH_AT91CAP9) #include <mach/at91cap9_ddrsdr.h> |