[PATCH V3 07/15] mmc: core: Hold re-tuning while bkops ongoing

[Adrian Hunter <adrian.hunter@intel.com>]

Hold re-tuning during bkops to prevent
it from conflicting with the busy state.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 drivers/mmc/core/core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index a73dc1b..212667b 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -301,6 +301,8 @@ void mmc_start_bkops(struct mmc_card *card, bool from_exception)
 	} else {
 		timeout = 0;
 		use_busy_signal = false;
+		/* Hold re-tuning for ongoing bkops */
+		mmc_retune_hold(card->host);
 	}
 
 	err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -309,6 +311,9 @@ void mmc_start_bkops(struct mmc_card *card, bool from_exception)
 	if (err) {
 		pr_warn("%s: Error %d starting bkops\n",
 			mmc_hostname(card->host), err);
+		/* bkops not ongoing, so release re-tuning */
+		if (!use_busy_signal)
+			mmc_retune_release(card->host);
 		goto out;
 	}
 
@@ -734,6 +739,7 @@ int mmc_stop_bkops(struct mmc_card *card)
 	 */
 	if (!err || (err == -EINVAL)) {
 		mmc_card_clr_doing_bkops(card);
+		mmc_retune_release(card->host);
 		err = 0;
 	}
 
-- 
1.9.1