drivers/video/backlight/lm3630a_bl.c: potential NULL deref in probe()
We dereference "pdata" later in the function so we can't leave it as NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
index 200dca0..d719a89 100644
--- a/drivers/video/backlight/lm3630a_bl.c
+++ b/drivers/video/backlight/lm3630a_bl.c
@@ -389,22 +389,21 @@
i2c_set_clientdata(client, pchip);
if (pdata == NULL) {
- pchip->pdata = devm_kzalloc(pchip->dev,
- sizeof(struct
- lm3630a_platform_data),
- GFP_KERNEL);
- if (pchip->pdata == NULL)
+ pdata = devm_kzalloc(pchip->dev,
+ sizeof(struct lm3630a_platform_data),
+ GFP_KERNEL);
+ if (pdata == NULL)
return -ENOMEM;
/* default values */
- pchip->pdata->leda_ctrl = LM3630A_LEDA_ENABLE;
- pchip->pdata->ledb_ctrl = LM3630A_LEDB_ENABLE;
- pchip->pdata->leda_max_brt = LM3630A_MAX_BRIGHTNESS;
- pchip->pdata->ledb_max_brt = LM3630A_MAX_BRIGHTNESS;
- pchip->pdata->leda_init_brt = LM3630A_MAX_BRIGHTNESS;
- pchip->pdata->ledb_init_brt = LM3630A_MAX_BRIGHTNESS;
- } else {
- pchip->pdata = pdata;
+ pdata->leda_ctrl = LM3630A_LEDA_ENABLE;
+ pdata->ledb_ctrl = LM3630A_LEDB_ENABLE;
+ pdata->leda_max_brt = LM3630A_MAX_BRIGHTNESS;
+ pdata->ledb_max_brt = LM3630A_MAX_BRIGHTNESS;
+ pdata->leda_init_brt = LM3630A_MAX_BRIGHTNESS;
+ pdata->ledb_init_brt = LM3630A_MAX_BRIGHTNESS;
}
+ pchip->pdata = pdata;
+
/* chip initialize */
rval = lm3630a_chip_init(pchip);
if (rval < 0) {