mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
39 lines
1.1 KiB
Diff
39 lines
1.1 KiB
Diff
|
From 3681c556d79797f132e18973611a14681ed47f76 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
||
|
|
Date: Thu, 30 Apr 2020 09:52:50 +0100
|
||
|
|
Subject: [PATCH] media: bcm2835-unicam: Fix reference counting in
|
||
|
|
unicam_open
|
||
|
|
|
||
|
|
The reference counting of node->open was only incremented after
|
||
|
|
a check that the node was v4l2_fh_is_singular_file, which resulted
|
||
|
|
in the counting going wrong and s_power not being called at an
|
||
|
|
appropriate time.
|
||
|
|
|
||
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
||
|
|
---
|
||
|
|
drivers/media/platform/bcm2835/bcm2835-unicam.c | 4 +++-
|
||
|
|
1 file changed, 3 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
|
||
|
|
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
|
||
|
|
@@ -2170,16 +2170,18 @@ static int unicam_open(struct file *file
|
||
|
|
goto unlock;
|
||
|
|
}
|
||
|
|
|
||
|
|
+ node->open++;
|
||
|
|
+
|
||
|
|
if (!v4l2_fh_is_singular_file(file))
|
||
|
|
goto unlock;
|
||
|
|
|
||
|
|
ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
|
||
|
|
if (ret < 0 && ret != -ENOIOCTLCMD) {
|
||
|
|
v4l2_fh_release(file);
|
||
|
|
+ node->open--;
|
||
|
|
goto unlock;
|
||
|
|
}
|
||
|
|
|
||
|
|
- node->open++;
|
||
|
|
ret = 0;
|
||
|
|
|
||
|
|
unlock:
|