mmc: core: Block CMD23 support for UHS104/SDXC cards.
SD cards operating at UHS104 or better support SET_BLOCK_COUNT.
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Reviewed-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index a380acc..71da564 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1057,9 +1057,12 @@
blk_queue_logical_block_size(md->queue.queue, 512);
set_capacity(md->disk, size);
- if (mmc_host_cmd23(card->host) &&
- mmc_card_mmc(card))
- md->flags |= MMC_BLK_CMD23;
+ if (mmc_host_cmd23(card->host)) {
+ if (mmc_card_mmc(card) ||
+ (mmc_card_sd(card) &&
+ card->scr.cmds & SD_SCR_CMD23_SUPPORT))
+ md->flags |= MMC_BLK_CMD23;
+ }
if (mmc_card_mmc(card) &&
md->flags & MMC_BLK_CMD23 &&
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 596d0b9..ff27741 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -203,6 +203,8 @@
else
card->erased_byte = 0x0;
+ if (scr->sda_spec3)
+ scr->cmds = UNSTUFF_BITS(resp, 32, 2);
return 0;
}