diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2013-12-02 12:20:36 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-12-10 12:05:37 +0100 |
| commit | 73beb63d290f961c299526852884846b0d868840 (patch) | |
| tree | 04605fbddf59914e379b2cf0830e53e66ca56797 | |
| parent | 78fd82238d0e5716578c326404184a27ba67fd6e (diff) | |
| download | op-kernel-dev-73beb63d290f961c299526852884846b0d868840.zip op-kernel-dev-73beb63d290f961c299526852884846b0d868840.tar.gz | |
mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
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.
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/rtsx_pcr.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c index 11e20af..705698f 100644 --- a/drivers/mfd/rtsx_pcr.c +++ b/drivers/mfd/rtsx_pcr.c @@ -1228,8 +1228,14 @@ static void rtsx_pci_remove(struct pci_dev *pcidev) 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); |
