From: Takashi Iwai <tiwai@xxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 7939831eacd81fccbd7a956b30c7bb3abb9079db upstream.
We've observed the missing pvpanic call at panic, and it turned out
that this was blocked by the broken notifier of drm_fb_helper, where
scheduling may be called during switching to the fb console.
It's fairly difficult to fix the drm_fb problem and a quick fix isn't
foreseen, a simpler solution for the missing pvpanic call would be
just to call this earlier.
In order to assure that, this patch sets a higher priority to pvpanic
notifier_block. Once when the issue of drm_fb is resolved, we can
remove this priority again.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/platform/x86/pvpanic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c
index 47ae0c47d4b5..469e182c5461 100644
--- a/drivers/platform/x86/pvpanic.c
+++ b/drivers/platform/x86/pvpanic.c
@@ -71,6 +71,7 @@ pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
static struct notifier_block pvpanic_panic_nb = {
.notifier_call = pvpanic_panic_notify,
+ .priority = 1, /* let this called before broken drm_fb_helper */
};
--
2.1.3
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