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[RFCv2,3/4] v4l2-ioctl.c: handle PREPARE_BUF like QUERYBUF.

Message ID e3bb496741ca78467c668a0974eb638bdc16beb1.1348824367.git.hans.verkuil@cisco.com (mailing list archive)
State New, archived
Headers show

Commit Message

Hans Verkuil Sept. 28, 2012, 9:30 a.m. UTC 
From: Hans Verkuil <hans.verkuil@cisco.com>

The core code for PREPARE_BUF didn't take the multiplanar case into account,
which might cause page faults. Handle PREPARE_BUF just like QUERYBUF and
QBUF/DQBUF.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
 drivers/media/v4l2-core/v4l2-ioctl.c |    1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 09512eb..6ae885d 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -2182,6 +2182,7 @@  static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
 	int ret = 0;
 
 	switch (cmd) {
+	case VIDIOC_PREPARE_BUF:
 	case VIDIOC_QUERYBUF:
 	case VIDIOC_QBUF:
 	case VIDIOC_DQBUF: {