1 files changed, 58 insertions, 0 deletions
diff --git a/recipes/linux/linux-kexecboot-2.6.24/pxa-resume.patch b/recipes/linux/linux-kexecboot-2.6.24/pxa-resume.patch
new file mode 100644
index 0000000000..71d466e31c
--- /dev/null
+++ b/recipes/linux/linux-kexecboot-2.6.24/pxa-resume.patch
@@ -0,0 +1,58 @@
+diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
+
+index a941c71..039194c 100644
+--- a/arch/arm/mach-pxa/pm.c
++++ b/arch/arm/mach-pxa/pm.c
+@@ -38,34 +38,37 @@ int pxa_pm_enter(suspend_state_t state)
+ 		iwmmxt_task_disable(NULL);
+ #endif
+ 
+-	pxa_cpu_pm_fns->save(sleep_save);
++	/* skip registers saving for standby */
++	if (state != PM_SUSPEND_STANDBY) {
++		pxa_cpu_pm_fns->save(sleep_save);
++		/* before sleeping, calculate and save a checksum */
++		for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
++			sleep_save_checksum += sleep_save[i];
++	}
+ 
+ 	/* Clear sleep reset status */
+ 	RCSR = RCSR_SMR;
+ 
+-	/* before sleeping, calculate and save a checksum */
+-	for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
+-		sleep_save_checksum += sleep_save[i];
+-
+ 	/* *** go zzz *** */
+ 	pxa_cpu_pm_fns->enter(state);
+ 	cpu_init();
+ 
+-	/* after sleeping, validate the checksum */
+-	for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
+-		checksum += sleep_save[i];
++	if (state != PM_SUSPEND_STANDBY) {
++		/* after sleeping, validate the checksum */
++		for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
++			checksum += sleep_save[i];
+ 
+-	/* if invalid, display message and wait for a hardware reset */
+-	if (checksum != sleep_save_checksum) {
++		/* if invalid, display message and wait for a hardware reset */
++		if (checksum != sleep_save_checksum) {
+ #ifdef CONFIG_ARCH_LUBBOCK
+-		LUB_HEXLED = 0xbadbadc5;
++			LUB_HEXLED = 0xbadbadc5;
+ #endif
+-		while (1)
+-			pxa_cpu_pm_fns->enter(state);
++			while (1)
++				pxa_cpu_pm_fns->enter(state);
++		}
++		pxa_cpu_pm_fns->restore(sleep_save);
+ 	}
+ 
+-	pxa_cpu_pm_fns->restore(sleep_save);
+-
+ 	pr_debug("*** made it back from resume\n");
+ 
+ 	return 0;