Hi,
On Thu, Nov 03 2011, Stefan Nilsson XK wrote:
> Adds a quirk that sets the data read timeout to a fixed value instead
> of relying on the information in the CSD. The timeout value choosen
> is 300ms since that has proven enough for the problematic cards found,
> but could be increased if other cards require this.
>
> This patch also enables this quirk for certain Micron cards known to
> have this problem.
>
> Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@xxxxxxxxxxxxxx>
> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx>
> ---
> drivers/mmc/card/block.c | 7 +++++++
> drivers/mmc/core/core.c | 12 ++++++++++++
> include/linux/mmc/card.h | 6 ++++++
> 3 files changed, 25 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
> index 4fd5723..04af5e5 100644
> --- a/drivers/mmc/card/block.c
> +++ b/drivers/mmc/card/block.c
> @@ -1603,6 +1603,13 @@ static const struct mmc_fixup blk_fixups[] =
> MMC_QUIRK_BLK_NO_CMD23),
> MMC_FIXUP("MMC32G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
> MMC_QUIRK_BLK_NO_CMD23),
> +
> + /*
> + * Some Micron MMC cards needs longer data read timeout than
> + * indicated in CSD.
> + */
> + MMC_FIXUP("", 0x13, 0x200, add_quirk_mmc, MMC_QUIRK_LONG_READ_TIME),
I think we should use CID_NAME_ANY instead of "", so I'll push that
change unless you object. Thanks!
- Chris.
--
Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/>
One Laptop Per Child
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