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- 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(+)
- --- a/drivers/mmc/core/quirks.c
- +++ b/drivers/mmc/core/quirks.c
- @@ -95,5 +95,9 @@ void mmc_fixup_device(struct mmc_card *c
- 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);
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