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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-02-01 21:32:43 +0100
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-03-31 20:36:06 +0200
commit5a2d4f053f67d03d212c2d036166934f4958173d (patch)
tree3894239069ddc30d4dc24658d29230d819cfc7f8 /arch/arm/mach-at91
parent65cc1a59d192be1df33633d3fe668a1e3e0edc36 (diff)
downloadlinux-5a2d4f053f67d03d212c2d036166934f4958173d.tar.bz2
ARM: at91: pm: Simplify at91rm9200_standby
Since 2008, AT91_MC_SDRAMC_LPR is set to 0 at kernel initialization. There is no use saving, changing and restoring it. Acked-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'arch/arm/mach-at91')
-rw-r--r--arch/arm/mach-at91/pm.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index a35b1541b328..3d68d93c11c7 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -222,20 +222,15 @@ static void at91_pm_set_standby(void (*at91_standby)(void))
*/
static void at91rm9200_standby(void)
{
- u32 lpr = at91_ramc_read(0, AT91_MC_SDRAMC_LPR);
-
asm volatile(
"b 1f\n\t"
".align 5\n\t"
"1: mcr p15, 0, %0, c7, c10, 4\n\t"
- " str %0, [%1, %2]\n\t"
- " str %3, [%1, %4]\n\t"
+ " str %2, [%1, %3]\n\t"
" mcr p15, 0, %0, c7, c0, 4\n\t"
- " str %5, [%1, %2]"
:
- : "r" (0), "r" (pm_data.ramc[0]), "r" (AT91_MC_SDRAMC_LPR),
- "r" (1), "r" (AT91_MC_SDRAMC_SRR),
- "r" (lpr));
+ : "r" (0), "r" (pm_data.ramc[0]),
+ "r" (1), "r" (AT91_MC_SDRAMC_SRR));
}
/* We manage both DDRAM/SDRAM controllers, we need more than one value to