linux-kernel - [PATCH 6/8] rkvdec: Use vb2_find

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed,  6 Jul 2022 15:26:55 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tomasz Figa <tfiga@...omium.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Subject: [PATCH 6/8] rkvdec: Use vb2_find_buffer

Use the newly introduced vb2_find_buffer API to get a vb2_buffer
given a buffer timestamp.

Signed-off-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
---
 drivers/staging/media/rkvdec/rkvdec-h264.c | 41 ++++++++--------------
 drivers/staging/media/rkvdec/rkvdec-vp9.c  | 10 +++---
 2 files changed, 19 insertions(+), 32 deletions(-)

diff --git a/drivers/staging/media/rkvdec/rkvdec-h264.c b/drivers/staging/media/rkvdec/rkvdec-h264.c
index 2992fb87cf72..4af5a831bde0 100644
--- a/drivers/staging/media/rkvdec/rkvdec-h264.c
+++ b/drivers/staging/media/rkvdec/rkvdec-h264.c
@@ -109,7 +109,7 @@ struct rkvdec_h264_run {
 	const struct v4l2_ctrl_h264_sps *sps;
 	const struct v4l2_ctrl_h264_pps *pps;
 	const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
-	int ref_buf_idx[V4L2_H264_NUM_DPB_ENTRIES];
+	struct vb2_buffer *ref_buf[V4L2_H264_NUM_DPB_ENTRIES];
 };
 
 struct rkvdec_h264_ctx {
@@ -742,17 +742,16 @@ static void lookup_ref_buf_idx(struct rkvdec_ctx *ctx,
 		struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
 		const struct v4l2_h264_dpb_entry *dpb = run->decode_params->dpb;
 		struct vb2_queue *cap_q = &m2m_ctx->cap_q_ctx.q;
-		int buf_idx = -1;
+		struct vb2_buffer *buf = NULL;
 
 		if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE) {
-			buf_idx = vb2_find_timestamp(cap_q,
-						     dpb[i].reference_ts, 0);
-			if (buf_idx < 0)
+			buf = vb2_find_buffer(cap_q, dpb[i].reference_ts);
+			if (!buf)
 				pr_debug("No buffer for reference_ts %llu",
 					 dpb[i].reference_ts);
 		}
 
-		run->ref_buf_idx[i] = buf_idx;
+		run->ref_buf[i] = buf;
 	}
 }
 
@@ -805,7 +804,7 @@ static void assemble_hw_rps(struct rkvdec_ctx *ctx,
 			if (WARN_ON(ref->index >= ARRAY_SIZE(dec_params->dpb)))
 				continue;
 
-			dpb_valid = run->ref_buf_idx[ref->index] >= 0;
+			dpb_valid = run->ref_buf[ref->index] != NULL;
 			bottom = ref->fields == V4L2_H264_BOTTOM_FIELD_REF;
 
 			set_ps_field(hw_rps, DPB_INFO(i, j),
@@ -881,24 +880,6 @@ static const u32 poc_reg_tbl_bottom_field[16] = {
 	RKVDEC_REG_H264_POC_REFER2(1)
 };
 
-static struct vb2_buffer *
-get_ref_buf(struct rkvdec_ctx *ctx, struct rkvdec_h264_run *run,
-	    unsigned int dpb_idx)
-{
-	struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
-	struct vb2_queue *cap_q = &m2m_ctx->cap_q_ctx.q;
-	int buf_idx = run->ref_buf_idx[dpb_idx];
-
-	/*
-	 * If a DPB entry is unused or invalid, address of current destination
-	 * buffer is returned.
-	 */
-	if (buf_idx < 0)
-		return &run->base.bufs.dst->vb2_buf;
-
-	return vb2_get_buffer(cap_q, buf_idx);
-}
-
 static void config_registers(struct rkvdec_ctx *ctx,
 			     struct rkvdec_h264_run *run)
 {
@@ -971,8 +952,14 @@ static void config_registers(struct rkvdec_ctx *ctx,
 
 	/* config ref pic address & poc */
 	for (i = 0; i < ARRAY_SIZE(dec_params->dpb); i++) {
-		struct vb2_buffer *vb_buf = get_ref_buf(ctx, run, i);
-
+		struct vb2_buffer *vb_buf = run->ref_buf[i];
+
+		/*
+		 * If a DPB entry is unused or invalid, address of current destination
+		 * buffer is returned.
+		 */
+		if (!vb_buf)
+			vb_buf = &dst_buf->vb2_buf;
 		refer_addr = vb2_dma_contig_plane_dma_addr(vb_buf, 0);
 
 		if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
diff --git a/drivers/staging/media/rkvdec/rkvdec-vp9.c b/drivers/staging/media/rkvdec/rkvdec-vp9.c
index c2f42e76be10..d8c1c0db15c7 100644
--- a/drivers/staging/media/rkvdec/rkvdec-vp9.c
+++ b/drivers/staging/media/rkvdec/rkvdec-vp9.c
@@ -383,17 +383,17 @@ get_ref_buf(struct rkvdec_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
 {
 	struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
 	struct vb2_queue *cap_q = &m2m_ctx->cap_q_ctx.q;
-	int buf_idx;
+	struct vb2_buffer *buf;
 
 	/*
 	 * If a ref is unused or invalid, address of current destination
 	 * buffer is returned.
 	 */
-	buf_idx = vb2_find_timestamp(cap_q, timestamp, 0);
-	if (buf_idx < 0)
-		return vb2_to_rkvdec_decoded_buf(&dst->vb2_buf);
+	buf = vb2_find_buffer(cap_q, timestamp);
+	if (!buf)
+		buf = &dst->vb2_buf;
 
-	return vb2_to_rkvdec_decoded_buf(vb2_get_buffer(cap_q, buf_idx));
+	return vb2_to_rkvdec_decoded_buf(buf);
 }
 
 static dma_addr_t get_mv_base_addr(struct rkvdec_decoded_buffer *buf)
-- 
2.34.3