fix some issues reported by Dan,
1. fix some signedness bug
2. don't use u32 as function return value
3. prevent a divide by zero bug
4. Just return zero on success, don't return a known parameter
5. check the validity of some variables
6. reset buffer state when return buffers
7. make sure the ALIGN won't wrap to zero
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
The amphion vpu codec ip contains encoder and decoder.
Windsor is the encoder, it supports to encode H.264.
Malone is the decoder, it features a powerful
video processing unit able to decode many formats,
such as H.264, HEVC, and other formats.
This Driver is for this IP that is based on the v4l2 mem2mem framework.
Supported SoCs are: IMX8QXP, IMX8QM
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Shijie Qin <shijie.qin@nxp.com>
Signed-off-by: Zhou Peng <eagle.zhou@nxp.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Ming Qian