On Wed, Jan 22, 2014 at 12:32:39PM +0800, Chris Ruehl wrote:
> Function mxcmci_request() throw an exception on a imx27 cpu.
> This patch fix the problem by test the pointer before access it.
>
> diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
> index f7199c8..8645d6a 100644
> --- a/drivers/mmc/host/mxcmmc.c
> +++ b/drivers/mmc/host/mxcmmc.c
> @@ -347,7 +347,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
> return 0;
>
> for_each_sg(data->sg, sg, data->sg_len, i) {
> - if (sg->offset & 3 || sg->length & 3 || sg->length < 512) {
> + if (sg && (sg->offset & 3 || sg->length & 3 || sg->length < 512)) {
The question is why sg is NULL. I think this shouldn't happen.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
