From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp-vbr8.xs4all.nl ([194.109.24.28]:2235 "EHLO smtp-vbr8.xs4all.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751738AbaBNKlj (ORCPT ); Fri, 14 Feb 2014 05:41:39 -0500 From: Hans Verkuil To: linux-media@vger.kernel.org Cc: pawel@osciak.com, s.nawrocki@samsung.com, m.szyprowski@samsung.com, Hans Verkuil Subject: [RFCv4 PATCH 02/11] vb2: change result code of buf_finish to void. Date: Fri, 14 Feb 2014 11:41:03 +0100 Message-Id: <1392374472-18393-3-git-send-email-hverkuil@xs4all.nl> In-Reply-To: <1392374472-18393-1-git-send-email-hverkuil@xs4all.nl> References: <1392374472-18393-1-git-send-email-hverkuil@xs4all.nl> Sender: linux-media-owner@vger.kernel.org List-ID: From: Hans Verkuil The buf_finish op should always work, so change the return type to void. Update the few drivers that use it. Note that buf_finish can be called both when the DMA is streaming and when it isn't (during queue_cancel). Update drivers to check that where appropriate. Signed-off-by: Hans Verkuil Acked-by: Pawel Osciak Reviewed-by: Pawel Osciak --- drivers/media/parport/bw-qcam.c | 6 ++++-- drivers/media/pci/sta2x11/sta2x11_vip.c | 7 +++---- drivers/media/platform/marvell-ccic/mcam-core.c | 3 +-- drivers/media/usb/pwc/pwc-if.c | 16 +++++++++------- drivers/media/usb/uvc/uvc_queue.c | 6 +++--- drivers/media/v4l2-core/videobuf2-core.c | 6 +----- drivers/staging/media/go7007/go7007-v4l2.c | 3 +-- include/media/videobuf2-core.h | 2 +- 8 files changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/media/parport/bw-qcam.c b/drivers/media/parport/bw-qcam.c index d12bd33..8d69bfb 100644 --- a/drivers/media/parport/bw-qcam.c +++ b/drivers/media/parport/bw-qcam.c @@ -667,13 +667,16 @@ static void buffer_queue(struct vb2_buffer *vb) vb2_buffer_done(vb, VB2_BUF_STATE_DONE); } -static int buffer_finish(struct vb2_buffer *vb) +static void buffer_finish(struct vb2_buffer *vb) { struct qcam *qcam = vb2_get_drv_priv(vb->vb2_queue); void *vbuf = vb2_plane_vaddr(vb, 0); int size = vb->vb2_queue->plane_sizes[0]; int len; + if (!vb2_is_streaming(vb->vb2_queue)) + return; + mutex_lock(&qcam->lock); parport_claim_or_block(qcam->pdev); @@ -691,7 +694,6 @@ static int buffer_finish(struct vb2_buffer *vb) if (len != size) vb->state = VB2_BUF_STATE_ERROR; vb2_set_plane_payload(vb, 0, len); - return 0; } static struct vb2_ops qcam_video_qops = { diff --git a/drivers/media/pci/sta2x11/sta2x11_vip.c b/drivers/media/pci/sta2x11/sta2x11_vip.c index e5cfb6c..bb11443 100644 --- a/drivers/media/pci/sta2x11/sta2x11_vip.c +++ b/drivers/media/pci/sta2x11/sta2x11_vip.c @@ -327,7 +327,7 @@ static void buffer_queue(struct vb2_buffer *vb) } spin_unlock(&vip->lock); } -static int buffer_finish(struct vb2_buffer *vb) +static void buffer_finish(struct vb2_buffer *vb) { struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue); struct vip_buffer *vip_buf = to_vip_buffer(vb); @@ -337,9 +337,8 @@ static int buffer_finish(struct vb2_buffer *vb) list_del_init(&vip_buf->list); spin_unlock(&vip->lock); - vip_active_buf_next(vip); - - return 0; + if (vb2_is_streaming(vb->vb2_queue)) + vip_active_buf_next(vip); } static int start_streaming(struct vb2_queue *vq, unsigned int count) diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 32fab30..8b34c48 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -1238,7 +1238,7 @@ static int mcam_vb_sg_buf_prepare(struct vb2_buffer *vb) return 0; } -static int mcam_vb_sg_buf_finish(struct vb2_buffer *vb) +static void mcam_vb_sg_buf_finish(struct vb2_buffer *vb) { struct mcam_camera *cam = vb2_get_drv_priv(vb->vb2_queue); struct sg_table *sg_table = vb2_dma_sg_plane_desc(vb, 0); @@ -1246,7 +1246,6 @@ static int mcam_vb_sg_buf_finish(struct vb2_buffer *vb) if (sg_table) dma_unmap_sg(cam->dev, sg_table->sgl, sg_table->nents, DMA_FROM_DEVICE); - return 0; } static void mcam_vb_sg_buf_cleanup(struct vb2_buffer *vb) diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c index abf365a..b9c9f10 100644 --- a/drivers/media/usb/pwc/pwc-if.c +++ b/drivers/media/usb/pwc/pwc-if.c @@ -614,17 +614,19 @@ static int buffer_prepare(struct vb2_buffer *vb) return 0; } -static int buffer_finish(struct vb2_buffer *vb) +static void buffer_finish(struct vb2_buffer *vb) { struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue); struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb); - /* - * Application has called dqbuf and is getting back a buffer we've - * filled, take the pwc data we've stored in buf->data and decompress - * it into a usable format, storing the result in the vb2_buffer - */ - return pwc_decompress(pdev, buf); + if (vb->state == VB2_BUF_STATE_DONE) { + /* + * Application has called dqbuf and is getting back a buffer we've + * filled, take the pwc data we've stored in buf->data and decompress + * it into a usable format, storing the result in the vb2_buffer + */ + pwc_decompress(pdev, buf); + } } static void buffer_cleanup(struct vb2_buffer *vb) diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c index cd962be..db5984e 100644 --- a/drivers/media/usb/uvc/uvc_queue.c +++ b/drivers/media/usb/uvc/uvc_queue.c @@ -104,15 +104,15 @@ static void uvc_buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&queue->irqlock, flags); } -static int uvc_buffer_finish(struct vb2_buffer *vb) +static void uvc_buffer_finish(struct vb2_buffer *vb) { struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue); struct uvc_streaming *stream = container_of(queue, struct uvc_streaming, queue); struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf); - uvc_video_clock_update(stream, &vb->v4l2_buf, buf); - return 0; + if (vb2_is_streaming(vb->vb2_queue)) + uvc_video_clock_update(stream, &vb->v4l2_buf, buf); } static void uvc_wait_prepare(struct vb2_queue *vq) diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 07b58bd..1f037de 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1787,11 +1787,7 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool n if (ret < 0) return ret; - ret = call_vb_qop(vb, buf_finish, vb); - if (ret) { - dprintk(1, "dqbuf: buffer finish failed\n"); - return ret; - } + call_vb_qop(vb, buf_finish, vb); switch (vb->state) { case VB2_BUF_STATE_DONE: diff --git a/drivers/staging/media/go7007/go7007-v4l2.c b/drivers/staging/media/go7007/go7007-v4l2.c index edc52e2..3a01576 100644 --- a/drivers/staging/media/go7007/go7007-v4l2.c +++ b/drivers/staging/media/go7007/go7007-v4l2.c @@ -470,7 +470,7 @@ static int go7007_buf_prepare(struct vb2_buffer *vb) return 0; } -static int go7007_buf_finish(struct vb2_buffer *vb) +static void go7007_buf_finish(struct vb2_buffer *vb) { struct vb2_queue *vq = vb->vb2_queue; struct go7007 *go = vb2_get_drv_priv(vq); @@ -483,7 +483,6 @@ static int go7007_buf_finish(struct vb2_buffer *vb) V4L2_BUF_FLAG_PFRAME); buf->flags |= frame_type_flag; buf->field = V4L2_FIELD_NONE; - return 0; } static int go7007_start_streaming(struct vb2_queue *q, unsigned int count) diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index f04eb28..f443ce0 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -311,7 +311,7 @@ struct vb2_ops { int (*buf_init)(struct vb2_buffer *vb); int (*buf_prepare)(struct vb2_buffer *vb); - int (*buf_finish)(struct vb2_buffer *vb); + void (*buf_finish)(struct vb2_buffer *vb); void (*buf_cleanup)(struct vb2_buffer *vb); int (*start_streaming)(struct vb2_queue *q, unsigned int count); -- 1.8.4.rc3