[PATCH V2 07/15] mmc: core: Hold re-tuning while bkops ongoing

[Adrian Hunter]

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

Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
 drivers/mmc/core/core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 91838ea..392a150 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -311,6 +311,10 @@ void mmc_start_bkops(struct mmc_card *card, bool 
from_exception)
        } else {
                timeout = 0;
                use_busy_signal = false;
+               /* Hold re-tuning for ongoing bkops */
+               err = mmc_retune_and_hold(card->host);
+               if (err)
+                       goto out;
        }
 
        err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -319,6 +323,9 @@ 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;
        }
 
@@ -753,6 +760,7 @@ 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

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