powerpc/mm: Fix the call trace when resumed from hibernation
In SMP mode, the kernel would produce call trace when resumed
from hibernation. The reason is when the function destroy_context
is called to drop the resuming mm context, the mm->context.active
is 1 which is wrong and should be zero.
We pass the current->active_mm as previous mm context to function
switch_mmu_context to decrease the context.active by 1.
In UP mode, there is no effect.
Signed-off-by: Tang Yuantian <b29983@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c
index aa17b76..641f9ad 100644
--- a/arch/powerpc/kernel/swsusp.c
+++ b/arch/powerpc/kernel/swsusp.c
@@ -33,6 +33,6 @@
void restore_processor_state(void)
{
#ifdef CONFIG_PPC32
- switch_mmu_context(NULL, current->active_mm);
+ switch_mmu_context(current->active_mm, current->active_mm);
#endif
}