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| author |   Ezequiel Garcia <ezequiel@collabora.com> | 2020-07-17 05:39:57 +0200 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-07-19 14:25:36 +0200 |
| commit | c89ee8ed3289c651f0521ff812c73c82803bdab8 (patch) | |
| tree | 3e53210ec42ae63ea72f35ff5ce94c9bbac79c7a /drivers/media | |
| parent | media: colorspaces-details.rst: fix V4L2_COLORSPACE_JPEG description (diff) | |
| download | linux-dev-c89ee8ed3289c651f0521ff812c73c82803bdab8.tar.xz linux-dev-c89ee8ed3289c651f0521ff812c73c82803bdab8.zip | |
media: videobuf2: Print videobuf2 buffer state by name
For debugging purposes, seeing the state integer
representation is really inconvenient.
Improve this and be developer-friendly by printing
the state name instead.
Suggested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-core.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index abaf28e057eb..f544d3393e9d 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -191,6 +191,23 @@ module_param(debug, int, 0644); static void __vb2_queue_cancel(struct vb2_queue *q); static void __enqueue_in_driver(struct vb2_buffer *vb); +static const char *vb2_state_name(enum vb2_buffer_state s) +{ + static const char * const state_names[] = { + [VB2_BUF_STATE_DEQUEUED] = "dequeued", + [VB2_BUF_STATE_IN_REQUEST] = "in request", + [VB2_BUF_STATE_PREPARING] = "preparing", + [VB2_BUF_STATE_QUEUED] = "queued", + [VB2_BUF_STATE_ACTIVE] = "active", + [VB2_BUF_STATE_DONE] = "done", + [VB2_BUF_STATE_ERROR] = "error", + }; + + if ((unsigned int)(s) < ARRAY_SIZE(state_names)) + return state_names[s]; + return "unknown"; +} + /* * __vb2_buf_mem_alloc() - allocate video memory for the given buffer */ @@ -1015,8 +1032,8 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) */ vb->cnt_buf_done++; #endif - dprintk(q, 4, "done processing on buffer %d, state: %d\n", - vb->index, state); + dprintk(q, 4, "done processing on buffer %d, state: %s\n", + vb->index, vb2_state_name(state)); if (state != VB2_BUF_STATE_QUEUED) __vb2_buf_mem_finish(vb); @@ -1490,8 +1507,8 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb) vb = q->bufs[index]; if (vb->state != VB2_BUF_STATE_DEQUEUED) { - dprintk(q, 1, "invalid buffer state %d\n", - vb->state); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } if (vb->prepared) { @@ -1670,7 +1687,8 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb, dprintk(q, 1, "buffer still being prepared\n"); return -EINVAL; default: - dprintk(q, 1, "invalid buffer state %d\n", vb->state); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } @@ -1884,7 +1902,8 @@ int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb, dprintk(q, 3, "returning done buffer with errors\n"); break; default: - dprintk(q, 1, "invalid buffer state\n"); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } @@ -1915,8 +1934,8 @@ int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb, media_request_put(vb->request); vb->request = NULL; - dprintk(q, 2, "dqbuf of buffer %d, with state %d\n", - vb->index, vb->state); + dprintk(q, 2, "dqbuf of buffer %d, state: %s\n", + vb->index, vb2_state_name(vb->state)); return 0; |