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From:   Detlev Casanova <detlev.casanova@collabora.com>
To:     linux-kernel@vger.kernel.org
Cc:     Dave Stevenson <dave.stevenson@raspberrypi.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>
Subject: [PATCH 1/9] regulator: rpi-panel: Register with a unique backlight name
Date:   Thu, 20 Jan 2022 10:21:42 -0500
Message-Id: <20220120152150.1952568-2-detlev.casanova@collabora.com>
In-Reply-To: <20220120152150.1952568-1-detlev.casanova@collabora.com>
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>

There's no reason why 2 Raspberry Pi DSI displays can't be
attached to a Pi Compute Module, so the backlight names need to
be unique.

Use the parent dev_name. It's not as readable, but is unique.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/regulator/rpi-panel-attiny-regulator.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c
index ee46bfbf5eee..370b9ae363dd 100644
--- a/drivers/regulator/rpi-panel-attiny-regulator.c
+++ b/drivers/regulator/rpi-panel-attiny-regulator.c
@@ -181,8 +181,7 @@ static int attiny_i2c_probe(struct i2c_client *i2c,
 
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = 0xff;
-	bl = devm_backlight_device_register(&i2c->dev,
-					    "7inch-touchscreen-panel-bl",
+	bl = devm_backlight_device_register(&i2c->dev, dev_name(&i2c->dev),
 					    &i2c->dev, regmap, &attiny_bl,
 					    &props);
 	if (IS_ERR(bl))
-- 
2.34.1