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| author | Mikulas Patocka <mpatocka@redhat.com> | 2018-06-03 16:40:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-05 09:18:39 +0200 |
| commit | f56d71483ea87fb6a4cdfb642585d66b90cc8742 (patch) | |
| tree | 3db0ffe7fd1d01fde2638b06f778d98d7319579e | |
| parent | 84c7c9010234715c9cb9470b09f41ed12b0d2163 (diff) | |
| download | linux-stable-f56d71483ea87fb6a4cdfb642585d66b90cc8742.tar.gz linux-stable-f56d71483ea87fb6a4cdfb642585d66b90cc8742.tar.bz2 linux-stable-f56d71483ea87fb6a4cdfb642585d66b90cc8742.zip | |
udl-kms: change down_interruptible to down
commit 8456b99c16d193c4c3b7df305cf431e027f0189c upstream.
If we leave urbs around, it causes not only leak, but also memory
corruption. This patch fixes the function udl_free_urb_list, so that it
always waits for all urbs that are in progress.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/udl/udl_main.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 33dbfb2c4748..2d7d7e0b2a23 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -141,18 +141,13 @@ static void udl_free_urb_list(struct drm_device *dev) struct list_head *node; struct urb_node *unode; struct urb *urb; - int ret; unsigned long flags; DRM_DEBUG("Waiting for completes and freeing all render urbs\n"); /* keep waiting and freeing, until we've got 'em all */ while (count--) { - - /* Getting interrupted means a leak, but ok at shutdown*/ - ret = down_interruptible(&udl->urbs.limit_sem); - if (ret) - break; + down(&udl->urbs.limit_sem); spin_lock_irqsave(&udl->urbs.lock, flags); |