linux-kernel - [PATCH] drm/imx: imx-ldb: Register LDB channel1 when it is the only channel to be used

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Message-Id: <1616381800-4862-1-git-send-email-victor.liu@nxp.com>
Date:   Mon, 22 Mar 2021 10:56:40 +0800
From:   Liu Ying <victor.liu@....com>
To:     linux-arm-kernel@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     p.zabel@...gutronix.de, airlied@...ux.ie, daniel@...ll.ch,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com
Subject: [PATCH] drm/imx: imx-ldb: Register LDB channel1 when it is the only channel to be used

LDB channel1 should be registered if it is the only channel to be used.
Without this patch, imx_ldb_bind() would skip registering LDB channel1
if LDB channel0 is not used, no matter LDB channel1 needs to be used or
not.

Fixes: 8767f4711b2b (drm/imx: imx-ldb: move initialization into probe)
Signed-off-by: Liu Ying <victor.liu@....com>
---
This patch fixes an issue introduced in v5.12-rc1.
It would be good to fix sooner than later.

 drivers/gpu/drm/imx/imx-ldb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index dbfe39e..b794ed4 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -583,7 +583,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
 		struct imx_ldb_channel *channel = &imx_ldb->channel[i];
 
 		if (!channel->ldb)
-			break;
+			continue;
 
 		ret = imx_ldb_register(drm, channel);
 		if (ret)
-- 
2.7.4