s2ram: warn when interrupts should be disabled but are not

[Pavel Machek]

sysdevs should be suspended/resumed with IRQs disabled; if something
reenables them by mistake, we want to know early.

Signed-off-by: Pavel Machek <pavel@xxxxxxx>

---
commit fc3bccaf69e6c05464e7154369639bd5c96ccdc1
tree bf960093ddb840242a00b4ec456ec79472b1c2ad
parent 308e9d5309f378209e931f63f729806ec0a4d9f1
author Pavel <pavel@xxxxxxxxxx> Sat, 12 Apr 2008 11:52:05 +0200
committer Pavel <pavel@xxxxxxxxxx> Sat, 12 Apr 2008 11:52:05 +0200

 drivers/ata/ahci.c |    2 +-
 drivers/base/sys.c |    3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 8e13fd9..e214467 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -22,6 +22,7 @@ #include <linux/string.h>
 #include <linux/pm.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/hardirq.h>
 
 #include "base.h"
 
@@ -367,6 +368,7 @@ int sysdev_suspend(pm_message_t state)
 			/* Call auxillary drivers first */
 			list_for_each_entry(drv, &cls->drivers, entry) {
 				if (drv->suspend) {
+					WARN_ON(!irqs_disabled());
 					ret = drv->suspend(sysdev, state);
 					if (ret)
 						goto aux_driver;
@@ -442,6 +444,7 @@ int sysdev_resume(void)
 		list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) {
 			pr_debug(" %s\n", kobject_name(&sysdev->kobj));
 
+			WARN_ON(!irqs_disabled());
 			__sysdev_resume(sysdev);
 		}
 	}

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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