at76c50x-usb: Adjustments for two function implementations

From: Markus Elfring <[email protected]>
Date: Sat, 30 Dec 2017 22:01:23 +0100

Two update suggestions were taken into account
from static source code analysis.

Markus Elfring (2):
Delete an error message for a failed memory allocation in at76_submit_rx_urb() Improve size determinations in at76_usbdfu_download()

 drivers/net/wireless/atmel/at76c50x-usb.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

2.15.1

From: Markus Elfring <[email protected]>
Date: Sat, 30 Dec 2017 21:50:12 +0100

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

---
 drivers/net/wireless/atmel/at76c50x-usb.c | 2 --
 1 file changed, 2 deletions(-)

index ede89d4ffc88..2893d339b440 100644
@@ -1223,8 +1223,6 @@ static int at76_submit_rx_urb(struct at76_priv *priv)
 	if (!skb) {
 		skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
 		if (!skb) {
-			wiphy_err(priv->hw->wiphy,
-				  "cannot allocate rx skbuff\n");
 			ret = -ENOMEM;
 			goto exit;
 		}

2.15.1

From: Markus Elfring <[email protected]>
Date: Sat, 30 Dec 2017 21:56:56 +0100

Replace the specification of two data types by pointer dereferences as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

---
 drivers/net/wireless/atmel/at76c50x-usb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 2893d339b440..6144d4a258ca 100644
@@ -383,7 +383,7 @@ static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 		return -EINVAL;
 	}
 
-	dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
+	dfu_stat_buf = kmalloc(sizeof(*dfu_stat_buf), GFP_KERNEL);
 	if (!dfu_stat_buf) {
 		ret = -ENOMEM;
 		goto exit;

@@ -395,7 +395,7 @@ static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 		goto exit;
 	}
 
-	dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
+	dfu_state = kmalloc(sizeof(*dfu_state), GFP_KERNEL);
 	if (!dfu_state) {
 		ret = -ENOMEM;
 		goto exit;

2.15.1