lkml.org 
[lkml]   [2018]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.18 26/35] Revert "uio: use request_threaded_irq instead"
Date
4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Xiubo Li <xiubli@redhat.com>

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/uio/uio.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -443,13 +443,10 @@ static irqreturn_t uio_interrupt(int irq
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;
}

@@ -969,9 +966,8 @@ int __uio_register_device(struct module
* 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)
goto err_request_irq;
}

\
 
 \ /
  Last update: 2018-08-21 08:32    [W:0.256 / U:1.252 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site