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authorXiubo Li <xiubli@redhat.com>2019-02-13 16:29:39 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-15 08:09:14 +0100
commitf142573d9cb63ccbcfc311ce5c997191b1df55e9 (patch)
tree8ca3b4dca69974880abf9a0e25179e6eaca8768b
parent5d07d245cb418064561c1a4e57313cf0a9132aa6 (diff)
Revert "uio: use request_threaded_irq instead"
commit 3d27c4de8d4fb2d4099ff324671792aa2578c6f9 upstream. Since mutex lock in irq hanler is useless currently, here will remove it together with it. This reverts commit 9421e45f5ff3d558cf8b75a8cc0824530caf3453. Reported-by: james.r.harris@intel.com CC: Ahsan Atta <ahsan.atta@intel.com> Signed-off-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/uio/uio.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 4e0cb7cdf739..fb5c9701b1fb 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -445,13 +445,10 @@ static irqreturn_t uio_interrupt(int irq, void *dev_id)
struct uio_device *idev = (struct uio_device *)dev_id;
irqreturn_t ret;
- mutex_lock(&idev->info_lock);
-
ret = idev->info->handler(irq, idev->info);
if (ret == IRQ_HANDLED)
uio_event_notify(idev->info);
- mutex_unlock(&idev->info_lock);
return ret;
}
@@ -974,9 +971,8 @@ int __uio_register_device(struct module *owner,
* FDs at the time of unregister and therefore may not be
* freed until they are released.
*/
- ret = request_threaded_irq(info->irq, NULL, uio_interrupt,
- info->irq_flags, info->name, idev);
-
+ ret = request_irq(info->irq, uio_interrupt,
+ info->irq_flags, info->name, idev);
if (ret) {
info->uio_dev = NULL;
goto err_request_irq;