target/linux/bcm27xx/patches-5.15/950-0481-regulator-rpi-panel-Register-with-a-unique-backlight.patch

   1 From 2d0958a56e6b0da1510ed86f4fb7409b43fedb4d Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 11 Feb 2021 18:46:06 +0000
   4 Subject: [PATCH] regulator: rpi-panel: Register with a unique
   5  backlight name
   6
   7 There's no reason why 2 Raspberry Pi DSI displays can't be
   8 attached to a Pi Compute Module, so the backlight names need to
   9 be unique.
  10
  11 Use the parent dev_name. It's not as readable, but is unique.
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  14 ---
  15  drivers/regulator/rpi-panel-attiny-regulator.c | 3 +--
  16  1 file changed, 1 insertion(+), 2 deletions(-)
  17
  18 --- a/drivers/regulator/rpi-panel-attiny-regulator.c
  19 +++ b/drivers/regulator/rpi-panel-attiny-regulator.c
  20 @@ -217,8 +217,7 @@ static int attiny_i2c_probe(struct i2c_c
  21
  22         props.type = BACKLIGHT_RAW;
  23         props.max_brightness = 0xff;
  24 -       bl = devm_backlight_device_register(&i2c->dev,
  25 -                                           "7inch-touchscreen-panel-bl",
  26 +       bl = devm_backlight_device_register(&i2c->dev, dev_name(&i2c->dev),
  27                                             &i2c->dev, regmap, &attiny_bl,
  28                                             &props);
  29         if (IS_ERR(bl))