This is a note to let you know that I've just added the patch titled
mmc: core: add missing pm event in mmc_pm_notify to fix hib restore
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-core-add-missing-pm-event-in-mmc_pm_notify-to-fix-hib-restore.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 184af16b09360d6273fd6160e6ff7f8e2482ef23 Mon Sep 17 00:00:00 2001
From: Grygorii Strashko <Grygorii.Strashko@xxxxxxxxxx>
Date: Thu, 23 Apr 2015 13:43:43 +0300
Subject: mmc: core: add missing pm event in mmc_pm_notify to fix hib restore
From: Grygorii Strashko <Grygorii.Strashko@xxxxxxxxxx>
commit 184af16b09360d6273fd6160e6ff7f8e2482ef23 upstream.
The PM_RESTORE_PREPARE is not handled now in mmc_pm_notify(),
as result mmc_rescan() could be scheduled and executed at
late hibernation restore stages when MMC device is suspended
already - which, in turn, will lead to system crash on TI dra7-evm board:
WARNING: CPU: 0 PID: 3188 at drivers/bus/omap_l3_noc.c:148 l3_interrupt_handler+0x258/0x374()
44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER1_P3 (Idle): Data Access in User mode during Functional access
Hence, add missed PM_RESTORE_PREPARE PM event in mmc_pm_notify().
Fixes: 4c2ef25fe0b8 (mmc: fix all hangs related to mmc/sd card...)
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@xxxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2648,6 +2648,7 @@ int mmc_pm_notify(struct notifier_block
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
+ case PM_RESTORE_PREPARE:
spin_lock_irqsave(&host->lock, flags);
host->rescan_disable = 1;
spin_unlock_irqrestore(&host->lock, flags);
Patches currently in stable-queue which might be from Grygorii.Strashko@xxxxxxxxxx are
queue-4.0/mmc-core-add-missing-pm-event-in-mmc_pm_notify-to-fix-hib-restore.patch
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