Re: [PATCH 1/1] mmc:core: Fix comparison issue in mmc_compare_ext_csds

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Hi,

On Wed, Feb 01 2012, Jurgen Heeks wrote:
> Found this issue during code review. Actually, there are two
> issues which both compensate together in lucky case.
> In unlucky case the bus width probing might not work as expected.
>
> Signed-off-by: Jurgen Heeks <JURGEN.HEEKS@xxxxxxxxx>
> ---
>  drivers/mmc/core/mmc.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> index f6ac0a4..4f06c43 100644
> --- a/drivers/mmc/core/mmc.c
> +++ b/drivers/mmc/core/mmc.c
> @@ -353,7 +353,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
>  	}
>  
>  	card->ext_csd.raw_hc_erase_gap_size =
> -		ext_csd[EXT_CSD_PARTITION_ATTRIBUTE];
> +		ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
>  	card->ext_csd.raw_sec_trim_mult =
>  		ext_csd[EXT_CSD_SEC_TRIM_MULT];
>  	card->ext_csd.raw_sec_erase_mult =
> @@ -451,7 +451,7 @@ static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width)
>  		goto out;
>  
>  	/* only compare read only fields */
> -	err = (!(card->ext_csd.raw_partition_support ==
> +	err = !((card->ext_csd.raw_partition_support ==
>  			bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) &&
>  		(card->ext_csd.raw_erased_mem_count ==
>  			bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) &&

Thanks very much, Jurgen!  Pushed to mmc-next for 3.3 with Namjae's
Reviewed-by.

- Chris.
-- 
Chris Ball   <cjb@xxxxxxxxxx>   <http://printf.net/>
One Laptop Per Child
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