diff options
| author | Andrei Warkentin <andreiw@motorola.com> | 2011-05-23 15:06:36 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-25 16:48:46 -0400 |
| commit | d0c97cfb81ebc5b416c0f92fa2fc18d2773e3023 (patch) | |
| tree | dbf0fa49bdad896d283a7f392c156483d9687d4b /include/linux/mmc/card.h | |
| parent | c59de9287993b5c36f9005f745a3ce0b1008131d (diff) | |
mmc: core: Use CMD23 for multiblock transfers when we can.
CMD23-prefixed instead of open-ended multiblock transfers
have a performance advantage on some MMC cards.
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/card.h')
| -rw-r--r-- | include/linux/mmc/card.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 7190aa2096f7..4a0e27baaea0 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -171,6 +171,7 @@ struct mmc_card { #define MMC_QUIRK_NONSTD_FUNC_IF (1<<4) /* SDIO card has nonstd function interfaces */ #define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */ #define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */ +#define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ unsigned int erase_size; /* erase size in sectors */ unsigned int erase_shift; /* if erase unit is power 2 */ |