diff options
| -rw-r--r-- | drivers/mmc/core/host.c | 24 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 4 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index e0a3ee16c0d3..1be42fab1a30 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -68,8 +68,32 @@ void mmc_retune_enable(struct mmc_host *host) jiffies + host->retune_period * HZ); } +/* + * Pause re-tuning for a small set of operations. The pause begins after the + * next command and after first doing re-tuning. + */ +void mmc_retune_pause(struct mmc_host *host) +{ + if (!host->retune_paused) { + host->retune_paused = 1; + mmc_retune_needed(host); + mmc_retune_hold(host); + } +} +EXPORT_SYMBOL(mmc_retune_pause); + +void mmc_retune_unpause(struct mmc_host *host) +{ + if (host->retune_paused) { + host->retune_paused = 0; + mmc_retune_release(host); + } +} +EXPORT_SYMBOL(mmc_retune_unpause); + void mmc_retune_disable(struct mmc_host *host) { + mmc_retune_unpause(host); host->can_retune = 0; del_timer_sync(&host->retune_timer); host->retune_now = 0; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 85800b48241f..45cde8cd39f2 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -329,6 +329,7 @@ struct mmc_host { unsigned int can_retune:1; /* re-tuning can be used */ unsigned int doing_retune:1; /* re-tuning in progress */ unsigned int retune_now:1; /* do re-tuning at next req */ + unsigned int retune_paused:1; /* re-tuning is temporarily disabled */ int rescan_disable; /* disable card detection */ int rescan_entered; /* used with nonremovable devices */ @@ -526,4 +527,7 @@ static inline void mmc_retune_recheck(struct mmc_host *host) host->retune_now = 1; } +void mmc_retune_pause(struct mmc_host *host); +void mmc_retune_unpause(struct mmc_host *host); + #endif /* LINUX_MMC_HOST_H */ |
