[PATCH] mmc: core: Do not hold re-tuning during CMD6 commands

Chaotian Jing
2017-03-24T06:19:00Z

this patch is refine for 'commit c6dbab9cb58f ("mmc: core: Hold re-tuning
during switch commands")'
Since it has 3 retries at max for CMD6, if the first CMD6 got CRC error,
then should do re-tune before the next CMD6 was sent.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
---
drivers/mmc/core/mmc_ops.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index fe80f26..6931927 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -534,8 +534,6 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
bool use_r1b_resp = use_busy_signal;
unsigned char old_timing = host->ios.timing;

- mmc_retune_hold(host);
-
/*
* If the cmd timeout and the max_busy_timeout of the host are both
* specified, let's validate them. A failure means we need to prevent
@@ -567,6 +565,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
cmd.sanitize_busy = true;

err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
+ mmc_retune_hold(host);
if (err)
goto out;

--
1.7.9.5