linux-kernel - [PATCH] [112/139] mmc: Fix re-probing with PM_POST

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Date:	Tue,  1 Feb 2011 16:45:10 -0800 (PST)
From:	Andi Kleen <andi@...stfloor.org>
To:	tiwai@...e.de, cjb@...top.org, gregkh@...e.de, ak@...ux.intel.com,
	linux-kernel@...r.kernel.org, stable@...nel.org
Subject: [PATCH] [112/139] mmc: Fix re-probing with PM_POST_RESTORE notification

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Takashi Iwai <tiwai@...e.de>

commit 274476f8fe0b6ac9bac542cc39de12c3dd0f43f6 upstream.

In the error-path where PM notifies PM_POST_RESTORE, the rescan-blockage
should be cleared as well.  Otherwise it'll be never re-probed.

Also, as a bonus, this fixes a bug in S4 with user-mode suspend in the
current code, as it sends PM_POST_RESTORE instead of
PM_POST_HIBERNATION wrongly.

Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Chris Ball <cjb@...top.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 drivers/mmc/core/core.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6.35.y/drivers/mmc/core/core.c
===================================================================
--- linux-2.6.35.y.orig/drivers/mmc/core/core.c
+++ linux-2.6.35.y/drivers/mmc/core/core.c
@@ -1366,6 +1366,7 @@ int mmc_pm_notify(struct notifier_block 
 
 	case PM_POST_SUSPEND:
 	case PM_POST_HIBERNATION:
+	case PM_POST_RESTORE:
 
 		spin_lock_irqsave(&host->lock, flags);
 		host->rescan_disable = 0;
--
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