Commits
Javier Martinez Canillas committed c8e913e19b8
[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>