ARM: at91: remove wait_for_interrupt definition

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@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

2 files changed, 1 insertions, 10 deletions

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 87be5aa18753..d7e8d4cbc5ef 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -262,7 +262,7 @@ 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 715813ed73e3..38f9a13ee794 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_AT91SAM9G45)
 #include <mach/at91sam9_ddrsdr.h>
 
@@ -76,8 +72,6 @@ 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>
 
@@ -104,9 +98,6 @@ 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