diff mbox series

[v5,4/9] mmc: core: Don't use close-ended rw for SDUC

Message ID 20240827122342.3314173-5-avri.altman@wdc.com
State Superseded
Headers show
Series Add SDUC Support | expand

Commit Message

Avri Altman Aug. 27, 2024, 12:23 p.m. UTC 
The SDUC spec expects CMD22 to get squeezed between CMD23 and the
read/write command, e.g. CMD23->CMD22->CMD18 and CMD23->CMD22->CMD25.
At this early stage of adoption, we want to avoid an amid stream of
fixes & quirks of bogus hw, that tends to apply extra logic specifically
around auto-cmd12 & auto-cmd23.

Let's leave close-ended out for now, and re-consider this should those
cards become ubiquitous, if any.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
---
 drivers/mmc/core/block.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 8816b3f0a312..713b22eced72 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2505,7 +2505,7 @@  static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
 	if (mmc_host_cmd23(card->host)) {
 		if ((mmc_card_mmc(card) &&
 		     card->csd.mmca_vsn >= CSD_SPEC_VER_3) ||
-		    (mmc_card_sd(card) &&
+		    (mmc_card_sd(card) && !mmc_card_ult_capacity(card) &&
 		     card->scr.cmds & SD_SCR_CMD23_SUPPORT))
 			md->flags |= MMC_BLK_CMD23;
 	}