linux-kernel - [PATCH 4.9 021/175] [media] tc358743: fix register i2c

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Message-Id: <20210920163918.768211620@linuxfoundation.org>
Date:   Mon, 20 Sep 2021 18:41:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Hans Verkuil <hansverk@...co.com>
Subject: [PATCH 4.9 021/175] [media] tc358743: fix register i2c_rd/wr function fix

From: Philipp Zabel <p.zabel@...gutronix.de>

commit 4b0755e90ae03ba40174842af6fa810355960fbc upstream.

The below mentioned fix contains a small but severe bug,
fix it to make the driver work again.

Fixes: 3538aa6ecfb2 ("[media] tc358743: fix register i2c_rd/wr functions")

Cc: Hans Verkuil <hans.verkuil@...co.com>
Cc: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Acked-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Hans Verkuil <hansverk@...co.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/media/i2c/tc358743.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -237,7 +237,7 @@ static void i2c_wr16(struct v4l2_subdev
 
 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
 {
-	i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 2) & mask) | val, 2);
+	i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 1) & mask) | val, 1);
 }
 
 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)