This is a note to let you know that I've just added the patch titled
mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
to the 3.12-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:
mfd-rtsx_pcr-disable-interrupts-before-cancelling-delayed-works.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 73beb63d290f961c299526852884846b0d868840 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <[email protected]>
Date: Mon, 2 Dec 2013 12:20:36 +0100
Subject: mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
From: Thomas Gleixner <[email protected]>
commit 73beb63d290f961c299526852884846b0d868840 upstream.
This fixes a kernel panic when resuming from suspend to RAM.
Without this fix an interrupt hits after the delayed work is canceled
and thus requeues it. So we end up freeing an armed timer.
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/mfd/rtsx_pcr.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -1230,8 +1230,14 @@ static void rtsx_pci_remove(struct pci_d
pcr->remove_pci = true;
- cancel_delayed_work(&pcr->carddet_work);
- cancel_delayed_work(&pcr->idle_work);
+ /* Disable interrupts at the pcr level */
+ spin_lock_irq(&pcr->lock);
+ rtsx_pci_writel(pcr, RTSX_BIER, 0);
+ pcr->bier = 0;
+ spin_unlock_irq(&pcr->lock);
+
+ cancel_delayed_work_sync(&pcr->carddet_work);
+ cancel_delayed_work_sync(&pcr->idle_work);
mfd_remove_devices(&pcidev->dev);
Patches currently in stable-queue which might be from [email protected] are
queue-3.12/mfd-rtsx_pcr-disable-interrupts-before-cancelling-delayed-works.patch
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