Allow power save/restore and their relevant mmc_bus_ops handlers exit with a return value.
Signed-off-by: Ohad Ben-Cohen <[email protected]> --- drivers/mmc/core/core.c | 20 ++++++++++++++------ drivers/mmc/core/core.h | 4 ++-- drivers/mmc/core/mmc.c | 8 ++++++-- drivers/mmc/core/sd.c | 8 ++++++-- include/linux/mmc/host.h | 4 ++-- 5 files changed, 30 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 5db49b1..73575c4 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1538,37 +1538,45 @@ void mmc_stop_host(struct mmc_host *host) mmc_power_off(host); } -void mmc_power_save_host(struct mmc_host *host) +int mmc_power_save_host(struct mmc_host *host) { + int ret = 0; + mmc_bus_get(host); if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) { mmc_bus_put(host); - return; + return -EINVAL; } if (host->bus_ops->power_save) - host->bus_ops->power_save(host); + ret = host->bus_ops->power_save(host); mmc_bus_put(host); mmc_power_off(host); + + return ret; } EXPORT_SYMBOL(mmc_power_save_host); -void mmc_power_restore_host(struct mmc_host *host) +int mmc_power_restore_host(struct mmc_host *host) { + int ret; + mmc_bus_get(host); if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) { mmc_bus_put(host); - return; + return -EINVAL; } mmc_power_up(host); - host->bus_ops->power_restore(host); + ret = host->bus_ops->power_restore(host); mmc_bus_put(host); + + return ret; } EXPORT_SYMBOL(mmc_power_restore_host); diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 9d9eef5..fff58fa 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -22,8 +22,8 @@ struct mmc_bus_ops { void (*detect)(struct mmc_host *); int (*suspend)(struct mmc_host *); int (*resume)(struct mmc_host *); - void (*power_save)(struct mmc_host *); - void (*power_restore)(struct mmc_host *); + int (*power_save)(struct mmc_host *); + int (*power_restore)(struct mmc_host *); }; void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops); diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 6909a54..1f69f5a 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -623,12 +623,16 @@ static int mmc_resume(struct mmc_host *host) return err; } -static void mmc_power_restore(struct mmc_host *host) +static int mmc_power_restore(struct mmc_host *host) { + int ret; + host->card->state &= ~MMC_STATE_HIGHSPEED; mmc_claim_host(host); - mmc_init_card(host, host->ocr, host->card); + ret = mmc_init_card(host, host->ocr, host->card); mmc_release_host(host); + + return ret; } static int mmc_sleep(struct mmc_host *host) diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 0f52410..32c58b4 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -722,12 +722,16 @@ static int mmc_sd_resume(struct mmc_host *host) return err; } -static void mmc_sd_power_restore(struct mmc_host *host) +static int mmc_sd_power_restore(struct mmc_host *host) { + int ret; + host->card->state &= ~MMC_STATE_HIGHSPEED; mmc_claim_host(host); - mmc_sd_init_card(host, host->ocr, host->card); + ret = mmc_sd_init_card(host, host->ocr, host->card); mmc_release_host(host); + + return ret; } static const struct mmc_bus_ops mmc_sd_ops = { diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 1575b52..0935841 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -236,8 +236,8 @@ static inline void *mmc_priv(struct mmc_host *host) extern int mmc_suspend_host(struct mmc_host *); extern int mmc_resume_host(struct mmc_host *); -extern void mmc_power_save_host(struct mmc_host *host); -extern void mmc_power_restore_host(struct mmc_host *host); +extern int mmc_power_save_host(struct mmc_host *host); +extern int mmc_power_restore_host(struct mmc_host *host); extern void mmc_detect_change(struct mmc_host *, unsigned long delay); extern void mmc_request_done(struct mmc_host *, struct mmc_request *); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
