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| author |   Javier Martinez Canillas <javier@osg.samsung.com> | 2016-06-08 22:57:35 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 14:26:27 -0300 |
| commit | c8e913e19b8ff06b887ec9bca62cad3a4f80167d (patch) | |
| tree | 1946225333bb0727bdf69dad392dd3643869169f /drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | |
| parent | [media] s5p-mfc: fix typo in s5p_mfc_dec function comment (diff) | |
| download | linux-dev-c8e913e19b8ff06b887ec9bca62cad3a4f80167d.tar.xz linux-dev-c8e913e19b8ff06b887ec9bca62cad3a4f80167d.zip | |
[media] s5p-mfc: don't print errors on VIDIOC_REQBUFS unsupported mem type
The V4L2 documentation says that applications must call the VIDIOC_REQBUFS
ioctl to determine if a memory mapped, user pointer or DMABUF based I/O is
supported by the driver.
For example GStreamer does this by first calling VIDIOC_REQBUFS with count
zero for all the possible streaming I/O methods and then finally doing the
real VIDIOC_REQBUFS with count N using a known to be supported memory type.
But the driver prints an error on VIDIOC_REQBUFS if the memory type is not
supported which leads to the following errors that can confuse the users:
[ 178.704390] vidioc_reqbufs:575: Only V4L2_MEMORY_MMAP is supported
[ 178.704666] vidioc_reqbufs:575: Only V4L2_MEMORY_MMAP is supported
[ 178.714956] vidioc_reqbufs:575: Only V4L2_MEMORY_MMAP is supported
[ 178.715229] vidioc_reqbufs:575: Only V4L2_MEMORY_MMAP is supported
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c index 8e2ee1a0df2b..038215c198ac 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c @@ -572,7 +572,7 @@ static int vidioc_reqbufs(struct file *file, void *priv, struct s5p_mfc_ctx *ctx = fh_to_ctx(priv); if (reqbufs->memory != V4L2_MEMORY_MMAP) { - mfc_err("Only V4L2_MEMORY_MMAP is supported\n"); + mfc_debug(2, "Only V4L2_MEMORY_MMAP is supported\n"); return -EINVAL; } |