diff options
| author | Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> | 2013-12-10 21:51:12 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-11 11:05:52 +0400 |
| commit | df5e4e8b576108f88f79e5b4c984d51d460d2360 (patch) | |
| tree | 47f1d8e49f3e62e887b73d806beec6e4127974c9 /drivers/misc/mic/host/mic_virtio.c | |
| parent | d6a484520c5572a4170fa915109ccfc0c38f5008 (diff) | |
| download | linux-df5e4e8b576108f88f79e5b4c984d51d460d2360.tar.xz | |
misc: mic: bug fix for interrupt acknowledgement in MSI/INTx case.
The interrupt handler (mic_interrupt), called in the MSI/INTx mode,
writes to the interrupt sources register to acknowledge the
interrupt and then calls the corresponding callback handlers to handle
the same. These callback handlers acknowledge the interrupts again
leading to missed interrupts. This patch fixes the issue by removing
the interrupt acknowlegment code from the callback handlers.
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Siva Krishna Kumar Reddy Yerramreddy <siva.krishna.kumar.reddy.yerramreddy@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.13
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mic/host/mic_virtio.c')
| -rw-r--r-- | drivers/misc/mic/host/mic_virtio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/mic/host/mic_virtio.c b/drivers/misc/mic/host/mic_virtio.c index 5b8494bd1e00..8d3c21cd1d9c 100644 --- a/drivers/misc/mic/host/mic_virtio.c +++ b/drivers/misc/mic/host/mic_virtio.c @@ -369,7 +369,7 @@ static irqreturn_t mic_virtio_intr_handler(int irq, void *data) struct mic_vdev *mvdev = data; struct mic_device *mdev = mvdev->mdev; - mdev->ops->ack_interrupt(mdev); + mdev->ops->intr_workarounds(mdev); schedule_work(&mvdev->virtio_bh_work); return IRQ_HANDLED; } |