Since media_entity_pipeline_start() now does link validation, it may
actually fail. Perform the error handling.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
---
drivers/media/video/omap3isp/ispvideo.c | 52 ++++++++++++++++--------------
1 files changed, 28 insertions(+), 24 deletions(-)
diff --git a/drivers/media/video/omap3isp/ispvideo.c b/drivers/media/video/omap3isp/ispvideo.c
index b0d541b..d34f690 100644
--- a/drivers/media/video/omap3isp/ispvideo.c
+++ b/drivers/media/video/omap3isp/ispvideo.c
@@ -997,14 +997,16 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]);
pipe->max_rate = pipe->l3_ick;
- media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
+ ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
+ if (ret < 0)
+ goto err_pipeline_start;
/* Verify that the currently configured format matches the output of
* the connected subdev.
*/
ret = isp_video_check_format(video, vfh);
if (ret < 0)
- goto error;
+ goto err_check_format;
video->bpl_padding = ret;
video->bpl_value = vfh->format.fmt.pix.bytesperline;
@@ -1021,7 +1023,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
} else {
if (far_end == NULL) {
ret = -EPIPE;
- goto error;
+ goto err_check_format;
}
state = ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_IDLE_INPUT;
@@ -1032,7 +1034,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
/* Validate the pipeline and update its state. */
ret = isp_video_validate_pipeline(pipe);
if (ret < 0)
- goto error;
+ goto err_check_format;
pipe->error = false;
@@ -1054,7 +1056,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
ret = omap3isp_video_queue_streamon(&vfh->queue);
if (ret < 0)
- goto error;
+ goto err_check_format;
/* In sensor-to-memory mode, the stream can be started synchronously
* to the stream on command. In memory-to-memory mode, it will be
@@ -1064,32 +1066,34 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
ret = omap3isp_pipeline_set_stream(pipe,
ISP_PIPELINE_STREAM_CONTINUOUS);
if (ret < 0)
- goto error;
+ goto err_set_stream;
spin_lock_irqsave(&video->queue->irqlock, flags);
if (list_empty(&video->dmaqueue))
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
spin_unlock_irqrestore(&video->queue->irqlock, flags);
}
-error:
- if (ret < 0) {
- omap3isp_video_queue_streamoff(&vfh->queue);
- media_entity_pipeline_stop(&video->video.entity);
- if (video->isp->pdata->set_constraints)
- video->isp->pdata->set_constraints(video->isp, false);
- /* The DMA queue must be emptied here, otherwise CCDC interrupts
- * that will get triggered the next time the CCDC is powered up
- * will try to access buffers that might have been freed but
- * still present in the DMA queue. This can easily get triggered
- * if the above omap3isp_pipeline_set_stream() call fails on a
- * system with a free-running sensor.
- */
- INIT_LIST_HEAD(&video->dmaqueue);
- video->queue = NULL;
- }
+ video->streaming = 1;
+
+ mutex_unlock(&video->stream_lock);
+ return 0;
- if (!ret)
- video->streaming = 1;
+err_set_stream:
+ omap3isp_video_queue_streamoff(&vfh->queue);
+err_check_format:
+ media_entity_pipeline_stop(&video->video.entity);
+err_pipeline_start:
+ if (video->isp->pdata->set_constraints)
+ video->isp->pdata->set_constraints(video->isp, false);
+ /* The DMA queue must be emptied here, otherwise CCDC interrupts that
+ * will get triggered the next time the CCDC is powered up will try to
+ * access buffers that might have been freed but still present in the
+ * DMA queue. This can easily get triggered if the above
+ * omap3isp_pipeline_set_stream() call fails on a system with a
+ * free-running sensor.
+ */
+ INIT_LIST_HEAD(&video->dmaqueue);
+ video->queue = NULL;
mutex_unlock(&video->stream_lock);
return ret;
--
1.7.2.5
--
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