linux-kernel - [PATCH v2 02/10] media: hantro: Fix motion vectors usage condition

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Date:   Tue, 29 Oct 2019 01:24:47 +0000
From:   Jonas Karlman <jonas@...boo.se>
To:     Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Ezequiel Garcia <ezequiel@...labora.com>
CC:     Francois Buergisser <fbuergisser@...omium.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jonas Karlman <jonas@...boo.se>
Subject: [PATCH v2 02/10] media: hantro: Fix motion vectors usage condition

From: Francois Buergisser <fbuergisser@...omium.org>

The setting of the motion vectors usage and the setting of motion
vectors address are currently done under different conditions.

When decoding pre-recorded videos, this results of leaving the motion
vectors address unset, resulting in faulty memory accesses. Fix it
by using the same condition everywhere, which matches the profiles
that support motion vectors.

Fixes: dea0a82f3d22 ("media: hantro: Add support for H264 decoding on G1")
Signed-off-by: Francois Buergisser <fbuergisser@...omium.org>
Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
 drivers/staging/media/hantro/hantro_g1_h264_dec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/hantro/hantro_g1_h264_dec.c b/drivers/staging/media/hantro/hantro_g1_h264_dec.c
index 29130946dea4..a1cb18680200 100644
--- a/drivers/staging/media/hantro/hantro_g1_h264_dec.c
+++ b/drivers/staging/media/hantro/hantro_g1_h264_dec.c
@@ -35,7 +35,7 @@ static void set_params(struct hantro_ctx *ctx)
 	if (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD)
 		reg |= G1_REG_DEC_CTRL0_SEQ_MBAFF_E;
 	reg |= G1_REG_DEC_CTRL0_PICORD_COUNT_E;
-	if (dec_param->nal_ref_idc)
+	if (sps->profile_idc > 66 && dec_param->nal_ref_idc)
 		reg |= G1_REG_DEC_CTRL0_WRITE_MVS_E;
 
 	if (!(sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY) &&
@@ -245,7 +245,7 @@ static void set_buffers(struct hantro_ctx *ctx)
 	vdpu_write_relaxed(vpu, dst_dma, G1_REG_ADDR_DST);
 
 	/* Higher profiles require DMV buffer appended to reference frames. */
-	if (ctrls->sps->profile_idc > 66) {
+	if (ctrls->sps->profile_idc > 66 && ctrls->decode->nal_ref_idc) {
 		size_t pic_size = ctx->h264_dec.pic_size;
 		size_t mv_offset = round_up(pic_size, 8);
 
-- 
2.17.1