Re: [patch -next] mv643xx_eth: potential null dereference

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, 2010-07-23 at 12:15 +0200, Dan Carpenter wrote:
> We assume that "pd" can be null on the previous line, and throughout the
> function so we should check it here as well.  This was introduced by
> 9b2c2ff7a1c0 "mv643xx_eth: use sw csum for big packets"
> 
> Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
> 
> diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
> index 2fcdb1e..9166f55 100644
> --- a/drivers/net/mv643xx_eth.c
> +++ b/drivers/net/mv643xx_eth.c
> @@ -2675,7 +2675,8 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
>  	 * Detect hardware parameters.
>  	 */
>  	msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
> -	msp->tx_csum_limit = pd->tx_csum_limit ? pd->tx_csum_limit : 9 * 1024;
> +	msp->tx_csum_limit = (pd && pd->tx_csum_limit) ?
> +					pd->tx_csum_limit : 9 * 1024;

It's odd using two different check styles for the same
test on consecutive lines.

How about using the same style:

	msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ?
					pd->tx_csum_limit : 9 * 1024;


--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux