ARM: pm: ensure our temporary page table entry is removed from the TLB

Ensure that our temporary page table entry is flushed from the TLB
before we resume normal operations.  This ensures that userspace
won't trip over the stale TLB entry.

Tested-by: Kevin Hilman <khilman@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/include/asm/suspend.h b/arch/arm/include/asm/suspend.h
index 8d5b4461c205c7e21fd5245584f0c816ed2161da..f8db9d096bc70d82d511a426d2f151d250a7421c 100644 (file)
--- a/arch/arm/include/asm/suspend.h
+++ b/arch/arm/include/asm/suspend.h
@@ -2,6 +2,7 @@
 #define __ASM_ARM_SUSPEND_H
 
 #include <asm/memory.h>
+#include <asm/tlbflush.h>
 
 extern void cpu_resume(void);
 
@@ -14,6 +15,7 @@ static inline void cpu_suspend(unsigned long arg, void (*fn)(unsigned long))
        extern void __cpu_suspend(int, long, unsigned long,
                                  void (*)(unsigned long));
        __cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, arg, fn);
+       flush_tlb_all();
 }
 
 #endif