linux-kernel - [PATCH v2 1/9] regulator: rpi-panel: Register with a unique backlight name

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Date:   Fri, 21 Jan 2022 10:20:48 -0500
From:   Detlev Casanova <detlev.casanova@...labora.com>
To:     linux-kernel@...r.kernel.org
Cc:     Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH v2 1/9] regulator: rpi-panel: Register with a unique backlight name

From: Dave Stevenson <dave.stevenson@...pberrypi.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@...pberrypi.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