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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-05-31 17:08:49 +1000
committerGreg Kroah-Hartman <gregkh@suse.de>2005-06-20 15:15:37 -0700
commit42b16c051c3f462095fb8c9bad1bc05b34518cb9 (patch)
tree3178bf5b2e3b516b6aea270c757adf728db83836
parent8215534ce7d073423bfa9c17405c43ab7636ca03 (diff)
[PATCH] Driver core: Don't "lose" devices on suspend on failure
I think we need this patch or we might "lose" devices to the dpm_irq_off list if a failure occurs during the suspend process. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/base/power/suspend.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index 807e13fb205..2ccee3763ac 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -114,8 +114,19 @@ int device_suspend(pm_message_t state)
put_device(dev);
}
up(&dpm_list_sem);
- if (error)
+ if (error) {
+ /* we failed... before resuming, bring back devices from
+ * dpm_off_irq list back to main dpm_off list, we do want
+ * to call resume() on them, in case they partially suspended
+ * despite returning -EAGAIN
+ */
+ while (!list_empty(&dpm_off_irq)) {
+ struct list_head * entry = dpm_off_irq.next;
+ list_del(entry);
+ list_add(entry, &dpm_off);
+ }
dpm_resume();
+ }
up(&dpm_sem);
return error;
}