4.14-stable patches

added patches:
	media-videobuf2-v4l2-drop-warn_on-in-vb2_warn_zero_bytesused.patch

diff --git a/queue-4.14/media-videobuf2-v4l2-drop-warn_on-in-vb2_warn_zero_bytesused.patch b/queue-4.14/media-videobuf2-v4l2-drop-warn_on-in-vb2_warn_zero_bytesused.patch
new file mode 100644 (file)
index 0000000..98eb54a
--- /dev/null
+++ b/queue-4.14/media-videobuf2-v4l2-drop-warn_on-in-vb2_warn_zero_bytesused.patch
@@ -0,0 +1,34 @@
+From 5e99456c20f712dcc13d9f6ca4278937d5367355 Mon Sep 17 00:00:00 2001
+From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Date: Mon, 19 Nov 2018 10:33:44 -0500
+Subject: media: videobuf2-v4l2: drop WARN_ON in vb2_warn_zero_bytesused()
+
+From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+
+commit 5e99456c20f712dcc13d9f6ca4278937d5367355 upstream.
+
+Userspace shouldn't set bytesused to 0 for output buffers.
+vb2_warn_zero_bytesused() warns about this (only once!), but it also
+calls WARN_ON(1), which is confusing since it is not immediately clear
+that it warns about a 0 value for bytesused.
+
+Just drop the WARN_ON as it serves no purpose.
+
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Acked-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Cc: Matthias Maennich <maennich@google.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
+index f02d452ceeb9..1244c246d0c4 100644
+--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
++++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
+@@ -158,7 +158,6 @@ static void vb2_warn_zero_bytesused(struct vb2_buffer *vb)
+               return;
+ 
+       check_once = true;
+-      WARN_ON(1);
+ 
+       pr_warn("use of bytesused == 0 is deprecated and will be removed in the future,\n");
+       if (vb->vb2_queue->allow_zero_bytesused)