diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.18/0059-mmc-Disable-CMD23-transfers-on-all-cards.patch')
| -rwxr-xr-x | target/linux/brcm2708/patches-3.18/0059-mmc-Disable-CMD23-transfers-on-all-cards.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.18/0059-mmc-Disable-CMD23-transfers-on-all-cards.patch b/target/linux/brcm2708/patches-3.18/0059-mmc-Disable-CMD23-transfers-on-all-cards.patch new file mode 100755 index 0000000000..399228e1b5 --- /dev/null +++ b/target/linux/brcm2708/patches-3.18/0059-mmc-Disable-CMD23-transfers-on-all-cards.patch @@ -0,0 +1,31 @@ +From 06c752756a452a0c59447836edce57ef7393be5c Mon Sep 17 00:00:00 2001 +From: P33M <P33M@github.com> +Date: Tue, 13 Jan 2015 17:12:18 +0000 +Subject: [PATCH 059/114] mmc: Disable CMD23 transfers on all cards + +Pending wire-level investigation of these types of transfers +and associated errors on bcm2835-mmc, disable for now. Fallback of +CMD18/CMD25 transfers will be used automatically by the MMC layer. + +Reported/Tested-by: Gellert Weisz <gellert@raspberrypi.org> +--- + drivers/mmc/core/quirks.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/drivers/mmc/core/quirks.c b/drivers/mmc/core/quirks.c +index dd1d1e0..f472082 100644 +--- a/drivers/mmc/core/quirks.c ++++ b/drivers/mmc/core/quirks.c +@@ -95,5 +95,9 @@ void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table) + f->vendor_fixup(card, f->data); + } + } ++ /* SDHCI on BCM2708 - bug causes a certain sequence of CMD23 operations to fail. ++ * Disable this flag for all cards (fall-back to CMD25/CMD18 multi-block transfers). ++ */ ++ card->quirks |= MMC_QUIRK_BLK_NO_CMD23; + } + EXPORT_SYMBOL(mmc_fixup_device); +-- +1.8.3.2 + |