diff mbox series

usb: core: Move variable initialization to appropriate place

Message ID 20190130144828.28360-1-suwan.kim027@gmail.com (mailing list archive)
State Mainlined
Commit 1760435d613c9ee536eaf40ffa97958c3e1973fe
Headers show
Series usb: core: Move variable initialization to appropriate place | expand

Commit Message

Suwan Kim Jan. 30, 2019, 2:48 p.m. UTC
It is better to initialize the variable 'cfgno' in the for loop than
at the current place.

Signed-off-by: Suwan Kim <suwan.kim027@gmail.com>
---
 drivers/usb/core/config.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Alan Stern Jan. 30, 2019, 3:38 p.m. UTC | #1
On Wed, 30 Jan 2019, Suwan Kim wrote:

> It is better to initialize the variable 'cfgno' in the for loop than
> at the current place.
> 
> Signed-off-by: Suwan Kim <suwan.kim027@gmail.com>
> ---
>  drivers/usb/core/config.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
> index 4a0945c04b4c..7bb6b1bd06c8 100644
> --- a/drivers/usb/core/config.c
> +++ b/drivers/usb/core/config.c
> @@ -805,7 +805,6 @@ int usb_get_configuration(struct usb_device *dev)
>  	unsigned char *bigbuffer;
>  	struct usb_config_descriptor *desc;
>  
> -	cfgno = 0;
>  	if (ncfg > USB_MAXCONFIG) {
>  		dev_warn(ddev, "too many configurations: %d, "
>  		    "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG);
> @@ -831,7 +830,7 @@ int usb_get_configuration(struct usb_device *dev)
>  	if (!desc)
>  		goto err2;
>  
> -	for (; cfgno < ncfg; cfgno++) {
> +	for (cfgno = 0; cfgno < ncfg; cfgno++) {
>  		/* We grab just the first descriptor so we know how long
>  		 * the whole configuration is */
>  		result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno,

Acked-by: Alan Stern <stern@rowland.harvard.edu>
diff mbox series

Patch

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 4a0945c04b4c..7bb6b1bd06c8 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -805,7 +805,6 @@  int usb_get_configuration(struct usb_device *dev)
 	unsigned char *bigbuffer;
 	struct usb_config_descriptor *desc;
 
-	cfgno = 0;
 	if (ncfg > USB_MAXCONFIG) {
 		dev_warn(ddev, "too many configurations: %d, "
 		    "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG);
@@ -831,7 +830,7 @@  int usb_get_configuration(struct usb_device *dev)
 	if (!desc)
 		goto err2;
 
-	for (; cfgno < ncfg; cfgno++) {
+	for (cfgno = 0; cfgno < ncfg; cfgno++) {
 		/* We grab just the first descriptor so we know how long
 		 * the whole configuration is */
 		result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno,