lkml.org 
[lkml]   [2018]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 01/10] media: v4l2-ctrls: Add missing v4l2 ctrl unlock
Date
This adds a missing v4l2_ctrl_unlock call that is required to avoid
deadlocks.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index f67e9f5531fa..ba05a8b9a095 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -3614,10 +3614,12 @@ void v4l2_ctrl_request_complete(struct media_request *req,
continue;

v4l2_ctrl_lock(ctrl);
+
if (ref->req)
ptr_to_ptr(ctrl, ref->req->p_req, ref->p_req);
else
ptr_to_ptr(ctrl, ctrl->p_cur, ref->p_req);
+
v4l2_ctrl_unlock(ctrl);
}

@@ -3677,8 +3679,11 @@ void v4l2_ctrl_request_setup(struct media_request *req,
}
}
}
- if (!have_new_data)
+
+ if (!have_new_data) {
+ v4l2_ctrl_unlock(master);
continue;
+ }

for (i = 0; i < master->ncontrols; i++) {
if (master->cluster[i]) {
--
2.16.3
\
 
 \ /
  Last update: 2018-04-19 17:45    [W:0.290 / U:2.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site