Commit 36c5ed23 authored by Russell King's avatar Russell King
Browse files

[PATCH] ARM SMP: Fix PXA/SA11x0 suspend resume crash 



We need to re-initialise the stack pointers for undefined, IRQ
and abort mode handlers whenever we resume.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 3aa3dfb3

arch/arm/kernel/setup.c

+1 −1
Original line number Diff line number Diff line
@@ -328,7 +328,7 @@ static void __init setup_processor(void) 
 * cpu_init dumps the cache information, initialises SMP specific

 * information, and sets up the per-CPU stacks.

 */

void __init cpu_init(void)

void cpu_init(void)

{

	unsigned int cpu = smp_processor_id();

	struct stack *stk = &stacks[cpu];

arch/arm/mach-pxa/pm.c

+2 −0
Original line number Diff line number Diff line
@@ -133,6 +133,8 @@ static int pxa_pm_enter(suspend_state_t state) 
	/* *** go zzz *** */

	pxa_cpu_pm_enter(state);



	cpu_init();



	/* after sleeping, validate the checksum */

	checksum = 0;

	for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)

arch/arm/mach-sa1100/pm.c

+2 −0
Original line number Diff line number Diff line
@@ -88,6 +88,8 @@ static int sa11x0_pm_enter(suspend_state_t state) 
	/* go zzz */

	sa1100_cpu_suspend();



	cpu_init();



	/*

	 * Ensure not to come back here if it wasn't intended

	 */

include/asm-arm/system.h

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ extern void show_pte(struct mm_struct *mm, unsigned long addr); 
extern void __show_regs(struct pt_regs *);



extern int cpu_architecture(void);

extern void cpu_init(void);



#define set_cr(x)					\

	__asm__ __volatile__(				\