mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-22 18:44:44 +08:00
c8e913e19b
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> |
||
|---|---|---|
| .. | ||
| Makefile | ||
| regs-mfc-v6.h | ||
| regs-mfc-v7.h | ||
| regs-mfc-v8.h | ||
| regs-mfc.h | ||
| s5p_mfc_cmd_v5.c | ||
| s5p_mfc_cmd_v5.h | ||
| s5p_mfc_cmd_v6.c | ||
| s5p_mfc_cmd_v6.h | ||
| s5p_mfc_cmd.c | ||
| s5p_mfc_cmd.h | ||
| s5p_mfc_common.h | ||
| s5p_mfc_ctrl.c | ||
| s5p_mfc_ctrl.h | ||
| s5p_mfc_debug.h | ||
| s5p_mfc_dec.c | ||
| s5p_mfc_dec.h | ||
| s5p_mfc_enc.c | ||
| s5p_mfc_enc.h | ||
| s5p_mfc_intr.c | ||
| s5p_mfc_intr.h | ||
| s5p_mfc_iommu.h | ||
| s5p_mfc_opr_v5.c | ||
| s5p_mfc_opr_v5.h | ||
| s5p_mfc_opr_v6.c | ||
| s5p_mfc_opr_v6.h | ||
| s5p_mfc_opr.c | ||
| s5p_mfc_opr.h | ||
| s5p_mfc_pm.c | ||
| s5p_mfc_pm.h | ||
| s5p_mfc.c | ||