Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
From:   Nicolas Dufresne <nicolas.dufresne@collabora.com>
To:     Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     kernel@collabora.com, Jonas Karlman <jonas@kwiboo.se>,
        Ezequiel Garcia <ezequiel@collabora.com>,
        linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org,
        linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: [PATCH v1 13/24] media: rkvdec: h264: Fix reference frame_num wrap for second field
Date:   Mon, 28 Mar 2022 15:59:25 -0400
Message-Id: <20220328195936.82552-14-nicolas.dufresne@collabora.com>
In-Reply-To: <20220328195936.82552-1-nicolas.dufresne@collabora.com>
References: <20220328195936.82552-1-nicolas.dufresne@collabora.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Jonas Karlman <jonas@kwiboo.se>

When decoding the second field in a complementary field pair the second
field is sharing the same frame_num with the first field.

Currently the frame_num for the first field is wrapped when it matches the
field being decoded, this cause issues to decode the second field in a
complementary field pair.

Fix this by using inclusive comparison, less than or equal.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/staging/media/rkvdec/rkvdec-h264.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/rkvdec/rkvdec-h264.c b/drivers/staging/media/rkvdec/rkvdec-h264.c
index dff89732ddd0..842d8cd80e90 100644
--- a/drivers/staging/media/rkvdec/rkvdec-h264.c
+++ b/drivers/staging/media/rkvdec/rkvdec-h264.c
@@ -752,7 +752,7 @@ static void assemble_hw_rps(struct rkvdec_ctx *ctx,
 			continue;
 
 		if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM ||
-		    dpb[i].frame_num < dec_params->frame_num) {
+		    dpb[i].frame_num <= dec_params->frame_num) {
 			p[i] = dpb[i].frame_num;
 			continue;
 		}
-- 
2.34.1