linux-kernel - [PATCH 5.4 098/177] media: hantro: Fix motion vectors usage condition

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Message-Id: <20191216174840.762421341@linuxfoundation.org>
Date:   Mon, 16 Dec 2019 18:49:14 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Francois Buergisser <fbuergisser@...omium.org>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Jonas Karlman <jonas@...boo.se>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: [PATCH 5.4 098/177] media: hantro: Fix motion vectors usage condition

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

commit 658f9d9921d7e76af03f689b5f0ffde042b8bf5b upstream.

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>
Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>
Tested-by: Boris Brezillon <boris.brezillon@...labora.com>
Cc: <stable@...r.kernel.org>      # for v5.4 and up
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/media/hantro/hantro_g1_h264_dec.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 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
 	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) &&
@@ -246,7 +246,7 @@ static void set_buffers(struct hantro_ct
 	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);