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 | mfd-fixes-master.tar.gz | |
mfd: rtsx_pcr: Disable interrupts before cancelling delayed worksHEADmfd-fixes-3.13-2master
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 11e20afbdcacb7..705698fd2c7ed0 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); |