linux-kernel - Re: [PATCH] staging: rtl8192e: check return value of dev_skb

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Message-ID: <20140619052910.GP5500@mwanda>
Date:	Thu, 19 Jun 2014 08:29:10 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Nicholas Krause <xerofoify@...il.com>
Cc:	gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
	ben@...adent.org.uk, lisa@...apiadmin.com,
	valentina.manea.m@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: rtl8192e: check return value of dev_skb_alloc

On Wed, Jun 18, 2014 at 10:24:41PM -0400, Nicholas Krause wrote:
> Checks if dev_skb_alloc returns Null in function, fw_download_code.
> If the return value of dev_skb_alloc is NULL return false and exit
> this function.
> Signed-off-by: Nicholas Krause <xerofoify@...il.com>
> ---
>  drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> index 1a95d1f..38ae236 100644
> --- a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> +++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> @@ -62,6 +62,8 @@ static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
>  
>  		skb  = dev_alloc_skb(frag_length + 4);
>  		memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
> +		if (!skb)
> +			return !rt_status;

What's this !rt_status?  Just return false.

regards,
dan carpenter

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