Extract all frame buffer (including backlight) probing into
ht16k33_fbdev_probe().
Call ht16k33_fbdev_probe() after ht16k33_keypad_probe(), as the latter
does not need any manual cleanup in the probe error path.
Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
drivers/auxdisplay/ht16k33.c | 96 ++++++++++++++++++++----------------
1 file changed, 53 insertions(+), 43 deletions(-)
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index 7c34b7a7879deb1a..11d86960fbc5d8c1 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -394,33 +394,15 @@ static int ht16k33_keypad_probe(struct i2c_client *client,
return input_register_device(keypad->dev);
}
-static int ht16k33_probe(struct i2c_client *client)
+static int ht16k33_fbdev_probe(struct i2c_client *client,
+ struct ht16k33_priv *priv, uint32_t brightness)
{
- int err;
- uint32_t dft_brightness;
- struct backlight_device *bl;
- struct backlight_properties bl_props;
- struct ht16k33_priv *priv;
- struct ht16k33_fbdev *fbdev;
struct device *dev = &client->dev;
+ struct ht16k33_fbdev *fbdev = &priv->fbdev;
struct device_node *node = dev->of_node;
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- dev_err(dev, "i2c_check_functionality error\n");
- return -EIO;
- }
-
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->client = client;
- i2c_set_clientdata(client, priv);
- fbdev = &priv->fbdev;
-
- err = ht16k33_initialize(priv);
- if (err)
- return err;
+ struct backlight_properties bl_props;
+ struct backlight_device *bl;
+ int err;
/* Framebuffer (2 bytes per column) */
BUILD_BUG_ON(PAGE_SIZE < HT16K33_FB_SIZE);
@@ -462,13 +444,6 @@ static int ht16k33_probe(struct i2c_client *client)
if (err)
goto err_fbdev_info;
- /* Keypad */
- if (client->irq > 0) {
- err = ht16k33_keypad_probe(client, &priv->keypad);
- if (err)
- goto err_fbdev_unregister;
- }
-
/* Backlight */
memset(&bl_props, 0, sizeof(struct backlight_properties));
bl_props.type = BACKLIGHT_RAW;
@@ -482,18 +457,7 @@ static int ht16k33_probe(struct i2c_client *client)
goto err_fbdev_unregister;
}
- err = of_property_read_u32(node, "default-brightness-level",
- &dft_brightness);
- if (err) {
- dft_brightness = MAX_BRIGHTNESS;
- } else if (dft_brightness > MAX_BRIGHTNESS) {
- dev_warn(dev,
- "invalid default brightness level: %u, using %u\n",
- dft_brightness, MAX_BRIGHTNESS);
- dft_brightness = MAX_BRIGHTNESS;
- }
-
- bl->props.brightness = dft_brightness;
+ bl->props.brightness = brightness;
ht16k33_bl_update_status(bl);
ht16k33_fb_queue(priv);
@@ -509,6 +473,52 @@ static int ht16k33_probe(struct i2c_client *client)
return err;
}
+static int ht16k33_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device_node *node = dev->of_node;
+ struct ht16k33_priv *priv;
+ uint32_t dft_brightness;
+ int err;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(dev, "i2c_check_functionality error\n");
+ return -EIO;
+ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client = client;
+ i2c_set_clientdata(client, priv);
+
+ err = ht16k33_initialize(priv);
+ if (err)
+ return err;
+
+ err = of_property_read_u32(node, "default-brightness-level",
+ &dft_brightness);
+ if (err) {
+ dft_brightness = MAX_BRIGHTNESS;
+ } else if (dft_brightness > MAX_BRIGHTNESS) {
+ dev_warn(dev,
+ "invalid default brightness level: %u, using %u\n",
+ dft_brightness, MAX_BRIGHTNESS);
+ dft_brightness = MAX_BRIGHTNESS;
+ }
+
+ /* Keypad */
+ if (client->irq > 0) {
+ err = ht16k33_keypad_probe(client, &priv->keypad);
+ if (err)
+ return err;
+ }
+
+ /* Frame Buffer Display */
+ return ht16k33_fbdev_probe(client, priv, dft_brightness);
+}
+
static int ht16k33_remove(struct i2c_client *client)
{
struct ht16k33_priv *priv = i2c_get_clientdata(client);
--
2.25.1
