[PATCH][next] misc: hisi_hikey_usb: fix return of uninitialized ret status variable

[PATCH][next] misc: hisi_hikey_usb: fix return of uninitialized ret status variable

[Colin King]

From: Colin Ian King <colin.king@canonical.com>

Currently the return value from ret is uninitialized so the function
hisi_hikey_usb_parse_kirin970 is returning a garbage value when
succeeding. Since ret is not used anywhere else in the function, remove
it and just return 0 success at the end of the function.

Addresses-Coverity: ("Uninitialixed scalar variable")
Fixes: d210a0023590 ("misc: hisi_hikey_usb: add support for Hikey 970")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/misc/hisi_hikey_usb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/misc/hisi_hikey_usb.c b/drivers/misc/hisi_hikey_usb.c
index 2ddd4072788d..5759e7209023 100644
--- a/drivers/misc/hisi_hikey_usb.c
+++ b/drivers/misc/hisi_hikey_usb.c
@@ -151,7 +151,6 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
 					 struct hisi_hikey_usb *hisi_hikey_usb)
 {
 	struct regulator *regulator;
-	int ret;
 
 	regulator = devm_regulator_get(&pdev->dev, "hub-vdd");
 	if (IS_ERR(regulator)) {
@@ -172,7 +171,7 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
 	if (IS_ERR(hisi_hikey_usb->reset))
 		return PTR_ERR(hisi_hikey_usb->reset);
 
-	return ret;
+	return 0;
 }
 
 static int hisi_hikey_usb_probe(struct platform_device *pdev)
-- 
2.27.0

Re: [PATCH][next] misc: hisi_hikey_usb: fix return of uninitialized ret status variable

[Mauro Carvalho Chehab]

Em Mon, 14 Sep 2020 14:56:46 +0100
Colin King <colin.king@canonical.com> escreveu:

> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently the return value from ret is uninitialized so the function
> hisi_hikey_usb_parse_kirin970 is returning a garbage value when
> succeeding. Since ret is not used anywhere else in the function, remove
> it and just return 0 success at the end of the function.
> 
> Addresses-Coverity: ("Uninitialixed scalar variable")
> Fixes: d210a0023590 ("misc: hisi_hikey_usb: add support for Hikey 970")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

> ---
>  drivers/misc/hisi_hikey_usb.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/misc/hisi_hikey_usb.c b/drivers/misc/hisi_hikey_usb.c
> index 2ddd4072788d..5759e7209023 100644
> --- a/drivers/misc/hisi_hikey_usb.c
> +++ b/drivers/misc/hisi_hikey_usb.c
> @@ -151,7 +151,6 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
>  					 struct hisi_hikey_usb *hisi_hikey_usb)
>  {
>  	struct regulator *regulator;
> -	int ret;
>  
>  	regulator = devm_regulator_get(&pdev->dev, "hub-vdd");
>  	if (IS_ERR(regulator)) {
> @@ -172,7 +171,7 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
>  	if (IS_ERR(hisi_hikey_usb->reset))
>  		return PTR_ERR(hisi_hikey_usb->reset);
>  
> -	return ret;
> +	return 0;
>  }
>  
>  static int hisi_hikey_usb_probe(struct platform_device *pdev)



Thanks,
Mauro