From 73940235337ee91ba32eaf71d641d74d9b1c9b63 Mon Sep 17 00:00:00 2001 From: Benoit Parrot Date: Fri, 20 Sep 2019 14:05:47 -0300 Subject: media: am437x-vpfe: Streamlined vb2 buffer cleanup Returning queued vb2 buffers back to user space is a common task best handled by a helper function. Signed-off-by: Benoit Parrot Acked-by: Lad Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/am437x/am437x-vpfe.c | 53 ++++++++++++++--------------- 1 file changed, 25 insertions(+), 28 deletions(-) (limited to 'drivers/media/platform/am437x/am437x-vpfe.c') diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c index e0a4c8920df8..03415c179c85 100644 --- a/drivers/media/platform/am437x/am437x-vpfe.c +++ b/drivers/media/platform/am437x/am437x-vpfe.c @@ -1949,6 +1949,29 @@ static void vpfe_buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); } +static void vpfe_return_all_buffers(struct vpfe_device *vpfe, + enum vb2_buffer_state state) +{ + struct vpfe_cap_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); + list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + + if (vpfe->cur_frm) + vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state); + + if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm) + vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state); + + vpfe->cur_frm = NULL; + vpfe->next_frm = NULL; + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); +} + /* * vpfe_start_streaming : Starts the DMA engine for streaming * @vb: ptr to vb2_buffer @@ -1957,7 +1980,6 @@ static void vpfe_buffer_queue(struct vb2_buffer *vb) static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); - struct vpfe_cap_buffer *buf, *tmp; struct vpfe_subdev_info *sdinfo; unsigned long flags; unsigned long addr; @@ -2003,11 +2025,7 @@ static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) return 0; err: - list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) { - list_del(&buf->list); - vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); - } - + vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED); vpfe_pcr_enable(&vpfe->ccdc, 0); return ret; } @@ -2023,7 +2041,6 @@ static void vpfe_stop_streaming(struct vb2_queue *vq) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); struct vpfe_subdev_info *sdinfo; - unsigned long flags; int ret; vpfe_pcr_enable(&vpfe->ccdc, 0); @@ -2041,27 +2058,7 @@ static void vpfe_stop_streaming(struct vb2_queue *vq) vpfe_dbg(1, vpfe, "stream off failed in subdev\n"); /* release all active buffers */ - spin_lock_irqsave(&vpfe->dma_queue_lock, flags); - if (vpfe->cur_frm == vpfe->next_frm) { - vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } else { - if (vpfe->cur_frm != NULL) - vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - if (vpfe->next_frm != NULL) - vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } - - while (!list_empty(&vpfe->dma_queue)) { - vpfe->next_frm = list_entry(vpfe->dma_queue.next, - struct vpfe_cap_buffer, list); - list_del(&vpfe->next_frm->list); - vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } - spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); + vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR); } static int vpfe_g_pixelaspect(struct file *file, void *priv, -- cgit