From: "Lad, Prabhakar" <prabhakar.csengg@xxxxxxxxx>
this patch improve vpif_buffer_prepare() callback, as buf_prepare()
callback is never called with invalid state and check for
vb2_plane_vaddr(vb, 0) is dropped as payload check should
be done unconditionally.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
---
drivers/media/platform/davinci/vpif_display.c | 47 ++++++++++++-------------
1 file changed, 23 insertions(+), 24 deletions(-)
diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index 9999b9c..1c518de 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -67,41 +67,40 @@ static struct device *vpif_dev;
static void vpif_calculate_offsets(struct channel_obj *ch);
static void vpif_config_addr(struct channel_obj *ch, int muxmode);
-/*
- * buffer_prepare: This is the callback function called from vb2_qbuf()
- * function the buffer is prepared and user space virtual address is converted
- * into physical address
+/**
+ * vpif_buffer_prepare : callback function for buffer prepare
+ * @vb: ptr to vb2_buffer
+ *
+ * This is the callback function for buffer prepare when vb2_qbuf()
+ * function is called. The buffer is prepared and user space virtual address
+ * or user address is converted into physical address
*/
static int vpif_buffer_prepare(struct vb2_buffer *vb)
{
- struct vb2_queue *q = vb->vb2_queue;
- struct channel_obj *ch = vb2_get_drv_priv(q);
+ struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
struct common_obj *common;
- unsigned long addr;
common = &ch->common[VPIF_VIDEO_INDEX];
- if (vb->state != VB2_BUF_STATE_ACTIVE &&
- vb->state != VB2_BUF_STATE_PREPARED) {
- vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
- if (vb2_plane_vaddr(vb, 0) &&
- vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
- goto buf_align_exit;
-
- addr = vb2_dma_contig_plane_dma_addr(vb, 0);
- if (q->streaming &&
- (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
- if (!ISALIGNED(addr + common->ytop_off) ||
+
+ vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
+ if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
+ return -EINVAL;
+
+ vb->v4l2_buf.field = common->fmt.fmt.pix.field;
+
+ if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
+ unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ if (!ISALIGNED(addr + common->ytop_off) ||
!ISALIGNED(addr + common->ybtm_off) ||
!ISALIGNED(addr + common->ctop_off) ||
- !ISALIGNED(addr + common->cbtm_off))
- goto buf_align_exit;
+ !ISALIGNED(addr + common->cbtm_off)) {
+ vpif_err("buffer offset not aligned to 8 bytes\n");
+ return -EINVAL;
}
}
- return 0;
-buf_align_exit:
- vpif_err("buffer offset not aligned to 8 bytes\n");
- return -EINVAL;
+ return 0;
}
/*
--
1.7.9.5
--
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