[PATCH 3/4] at91 : remove wait_for_interrupt definition

[Daniel Lezcano]

All the "wait_for_interrupt" definition are aliases to cpu_do_idle.
Only the rm9200 has an asm routine to switch to wfi. But the cpu_do_idle
for this platform has exactly the same asm routine.

arch/arm/mm/proc-arm920.S
...
ENTRY(cpu_arm920_do_idle)
        mcr     p15, 0, r0, c7, c0, 4           @ Wait for interrupt
...

Then it is safe to invoke cpu_do_idle for this platform. As all the
wait_for_interrupts are definition for cpu_do_idle, let's remove it
and replace its invokation by cpu_do_idle.

Signed-off-by: Daniel Lezcano <daniel.lezcano at linaro.org>
---
 arch/arm/mach-at91/pm.c |    2 +-
 arch/arm/mach-at91/pm.h |   12 ------------
 2 files changed, 1 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 62ad955..acf32c7 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -272,7 +272,7 @@ static int at91_pm_enter(suspend_state_t state)
 					: /* no input */
 					: "r0");
 			saved_lpr = sdram_selfrefresh_enable();
-			wait_for_interrupt_enable();
+			cpu_do_idle();
 			sdram_selfrefresh_disable(saved_lpr);
 			break;
 
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index 325ef76..624c99c 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -36,10 +36,6 @@ 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 volatile ("mcr p15, 0, %0, c7, c0, 4" \
-		      : : "r" (0))
-
 #elif defined(CONFIG_ARCH_AT91CAP9)
 #include <mach/at91cap9_ddrsdr.h>
 
@@ -58,9 +54,6 @@ static inline u32 sdram_selfrefresh_enable(void)
 #define sdram_selfrefresh_disable(saved_lpr) \
 	at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr)
 
-#define wait_for_interrupt_enable() \
-	cpu_do_idle()
-
 #elif defined(CONFIG_ARCH_AT91SAM9G45)
 #include <mach/at91sam9_ddrsdr.h>
 
@@ -97,8 +90,6 @@ static inline u32 sdram_selfrefresh_enable(void)
 		at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1); \
 	} while (0)
 
-#define wait_for_interrupt_enable()		cpu_do_idle()
-
 #else
 #include <mach/at91sam9_sdramc.h>
 
@@ -125,9 +116,6 @@ static inline u32 sdram_selfrefresh_enable(void)
 #define sdram_selfrefresh_disable(saved_lpr) \
 	at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr)
 
-#define wait_for_interrupt_enable() \
-	cpu_do_idle()
-
 #endif
 
 #endif
-- 
1.7.5.4