From: Xenia Ragiadakou <burzalodowa@gmail.com>
Date: Sat, 21 Sep 2013 20:42:26 +0000 (+0300)
Subject: staging: rtl8192u: check dev_alloc_skb() return value in fw_download_code()
X-Git-Tag: firefly_0821_release~176^2~5057^2~603
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f8518efa4e3f168223a8bf3afa39895e92a20f89;p=firefly-linux-kernel-4.4.55.git

staging: rtl8192u: check dev_alloc_skb() return value in fw_download_code()

This patch adds a check whether skb allocation, in fw_download_code(), was
successful.

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8192u/r819xU_firmware.c b/drivers/staging/rtl8192u/r819xU_firmware.c
index cde4365b6f7a..106740eef335 100644
--- a/drivers/staging/rtl8192u/r819xU_firmware.c
+++ b/drivers/staging/rtl8192u/r819xU_firmware.c
@@ -62,6 +62,8 @@ bool fw_download_code(struct net_device *dev, u8 *code_virtual_address, u32 buff
 		 * add 4 to avoid packet appending overflow.
 		 * */
 		skb  = dev_alloc_skb(USB_HWDESC_HEADER_LEN + frag_length + 4);
+		if (!skb)
+			return false;
 		memcpy((unsigned char *)(skb->cb),&dev,sizeof(dev));
 		tcb_desc = (cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
 		tcb_desc->queue_index = TXCMD_QUEUE;