linux-kernel - [PATCH] staging: rtl8192 Check for Null return from dev_skb

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Message-Id: <1403209102-10633-1-git-send-email-xerofoify@gmail.com>
Date:	Thu, 19 Jun 2014 16:18:22 -0400
From:	Nicholas Krause <xerofoify@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	lisa@...apiadmin.com, valentina.manea.m@...il.com,
	ben@...adent.org.uk, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rtl8192 Check for Null return from dev_skb_alloc

Checks for Null return from dev_skb_alloc if it returns Null,
fw_download returns false. Otherwise it returns true.Also
removed rt_status due to returning true of false directly.

Signed-off-by: Nicholas Krause <xerofoify@...il.com>
---
 drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
index 1a95d1f..affa89a 100644
--- a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
+++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
@@ -36,7 +36,6 @@ static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
 			     u32 buffer_len)
 {
 	struct r8192_priv *priv = rtllib_priv(dev);
-	bool		    rt_status = true;
 	u16		    frag_threshold;
 	u16		    frag_length, frag_offset = 0;
 	int		    i;
@@ -59,7 +58,9 @@ static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
 			bLastIniPkt = 1;
 
 		}
-
+		skb  = dev_alloc_skb(frag_length + 4);
+		if (!skb)
+			return false;
 		skb  = dev_alloc_skb(frag_length + 4);
 		memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
 		tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
@@ -99,7 +100,7 @@ static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
 
 	write_nic_byte(dev, TPPoll, TPPoll_CQ);
 
-	return rt_status;
+	return false;
 }
 
 static bool CPUcheck_maincodeok_turnonCPU(struct net_device *dev)
-- 
1.9.1

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