From 5b70084f6cbcd53f615433f9d216e01bd71de0bb Mon Sep 17 00:00:00 2001
From: Nicholas Mc Guire <hofrat@osadl.org>
Date: Sat, 21 Jul 2018 13:31:24 +0200
Subject: [PATCH] staging: bcm2835-camera: handle wait_for_completion_timeout return properly
Git-commit: 5b70084f6cbcd53f615433f9d216e01bd71de0bb
Patch-mainline: v4.19-rc1
References: bsc#1051510
wait_for_completion_timeout returns unsigned long not int so a variable of
proper type is introduced. Further the check for <= 0 is ambiguous and
should be == 0 here indicating timeout.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 7b3ad5abf027 ("staging: Import the BCM2835 MMAL-based V4L2 camera driver.")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
index ce26741ae9d9..3f61d04c47ab 100644
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
@@ -580,6 +580,7 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
static void stop_streaming(struct vb2_queue *vq)
{
int ret;
+ unsigned long timeout;
struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
@@ -605,10 +606,10 @@ static void stop_streaming(struct vb2_queue *vq)
sizeof(dev->capture.frame_count));
/* wait for last frame to complete */
- ret = wait_for_completion_timeout(&dev->capture.frame_cmplt, HZ);
- if (ret <= 0)
+ timeout = wait_for_completion_timeout(&dev->capture.frame_cmplt, HZ);
+ if (timeout == 0)
v4l2_err(&dev->v4l2_dev,
- "error %d waiting for frame completion\n", ret);
+ "timed out waiting for frame completion\n");
v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
"disabling connection\n");
--
2.18.0