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path: root/drivers/video/backlight/l4f00242t03.c
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Diffstat (limited to 'drivers/video/backlight/l4f00242t03.c')
-rw-r--r--drivers/video/backlight/l4f00242t03.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index fb6155771326..a35a38c709cf 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -51,14 +51,33 @@ static void l4f00242t03_lcd_init(struct spi_device *spi)
struct l4f00242t03_pdata *pdata = spi->dev.platform_data;
struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) };
+ int ret;
dev_dbg(&spi->dev, "initializing LCD\n");
- regulator_set_voltage(priv->io_reg, 1800000, 1800000);
- regulator_enable(priv->io_reg);
+ ret = regulator_set_voltage(priv->io_reg, 1800000, 1800000);
+ if (ret) {
+ dev_err(&spi->dev, "failed to set the IO regulator voltage.\n");
+ return;
+ }
+ ret = regulator_enable(priv->io_reg);
+ if (ret) {
+ dev_err(&spi->dev, "failed to enable the IO regulator.\n");
+ return;
+ }
- regulator_set_voltage(priv->core_reg, 2800000, 2800000);
- regulator_enable(priv->core_reg);
+ ret = regulator_set_voltage(priv->core_reg, 2800000, 2800000);
+ if (ret) {
+ dev_err(&spi->dev, "failed to set the core regulator voltage.\n");
+ regulator_disable(priv->io_reg);
+ return;
+ }
+ ret = regulator_enable(priv->core_reg);
+ if (ret) {
+ dev_err(&spi->dev, "failed to enable the core regulator.\n");
+ regulator_disable(priv->io_reg);
+ return;
+ }
l4f00242t03_reset(pdata->reset_gpio);