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media: atomisp: fix uninitialized bug in gmin_get_pmic_id_and_addr()

PATCH In review Dan Carpenter 2 participants 2 messages Oct 12, 2021

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#0 lore raw

PATCH 1/1 media: atomisp: fix uninitialized bug in gmin_get_pmic_id_and_addr()

The "power" pointer is not initialized on the else path and that would lead to an Oops.

Fixes c30f4cb2d4c7 ("media: atomisp: Refactor PMIC detection to a separate function")
---
 drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c +1 -1
index d8c9e31314b2..62dc06e22476 100644
@@ -481,7 +481,7 @@ static int atomisp_get_acpi_power(struct device *dev)
 
 static u8 gmin_get_pmic_id_and_addr(struct device *dev)
 {
-	struct i2c_client *power;
+	struct i2c_client *power = NULL;
 	static u8 pmic_i2c_addr;
 
 	if (pmic_id)
Signature · 1 line
2.20.1
Reviewed-by on v1 1/1
#1 lore raw

Quoting Dan Carpenter (2021-10-12 09:21:50)

Quoted 3 lines

The "power" pointer is not initialized on the else path and that would lead to an Oops.

Yes, that looks like a good catch.

Quoted 22 lines
Fixes c30f4cb2d4c7 ("media: atomisp: Refactor PMIC detection to a separate function")
---
 drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c +1 -1
index d8c9e31314b2..62dc06e22476 100644
@@ -481,7 +481,7 @@ static int atomisp_get_acpi_power(struct device *dev)
 
 static u8 gmin_get_pmic_id_and_addr(struct device *dev)
 {
-       struct i2c_client *power;
+       struct i2c_client *power = NULL;
        static u8 pmic_i2c_addr;
 
        if (pmic_id)
Signature · 1 line
2.20.1