diff options
| -rw-r--r-- | drivers/mmc/core/core.c | 25 | ||||
| -rw-r--r-- | drivers/mmc/core/core.h | 1 | ||||
| -rw-r--r-- | drivers/mmc/core/sdio.c | 27 |
3 files changed, 32 insertions, 21 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index d2ee2829b313..7a8a42d3a039 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2628,22 +2628,6 @@ int mmc_suspend_host(struct mmc_host *host) if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) err = host->bus_ops->suspend(host); - - if (err == -ENOSYS || !host->bus_ops->resume) { - /* - * We simply "remove" the card in this case. - * It will be redetected on resume. (Calling - * bus_ops->remove() with a claimed host can - * deadlock.) - */ - host->bus_ops->remove(host); - mmc_claim_host(host); - mmc_detach_bus(host); - mmc_power_off(host); - mmc_release_host(host); - host->pm_flags = 0; - err = 0; - } } mmc_bus_put(host); @@ -2706,6 +2690,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, struct mmc_host *host = container_of( notify_block, struct mmc_host, pm_notify); unsigned long flags; + int err = 0; switch (mode) { case PM_HIBERNATION_PREPARE: @@ -2715,7 +2700,13 @@ int mmc_pm_notify(struct notifier_block *notify_block, spin_unlock_irqrestore(&host->lock, flags); cancel_delayed_work_sync(&host->detect); - if (!host->bus_ops || host->bus_ops->suspend) + if (!host->bus_ops) + break; + + /* Validate prerequisites for suspend */ + if (host->bus_ops->pre_suspend) + err = host->bus_ops->pre_suspend(host); + if (!err && host->bus_ops->suspend) break; /* Calling bus_ops->remove() with a claimed host can deadlock */ diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 52a3650307af..79f37cfc373b 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -18,6 +18,7 @@ struct mmc_bus_ops { void (*remove)(struct mmc_host *); void (*detect)(struct mmc_host *); + int (*pre_suspend)(struct mmc_host *); int (*suspend)(struct mmc_host *); int (*resume)(struct mmc_host *); int (*runtime_suspend)(struct mmc_host *); diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 1fbbd1bc55ec..be8cca8d3024 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -910,11 +910,11 @@ out: } /* - * SDIO suspend. We need to suspend all functions separately. + * SDIO pre_suspend. We need to suspend all functions separately. * Therefore all registered functions must have drivers with suspend * and resume methods. Failing that we simply remove the whole card. */ -static int mmc_sdio_suspend(struct mmc_host *host) +static int mmc_sdio_pre_suspend(struct mmc_host *host) { int i, err = 0; @@ -925,8 +925,26 @@ static int mmc_sdio_suspend(struct mmc_host *host) if (!pmops || !pmops->suspend || !pmops->resume) { /* force removal of entire card in that case */ err = -ENOSYS; - } else - err = pmops->suspend(&func->dev); + break; + } + } + } + + return err; +} + +/* + * SDIO suspend. Suspend all functions separately. + */ +static int mmc_sdio_suspend(struct mmc_host *host) +{ + int i, err = 0; + + for (i = 0; i < host->card->sdio_funcs; i++) { + struct sdio_func *func = host->card->sdio_func[i]; + if (func && sdio_func_present(func) && func->dev.driver) { + const struct dev_pm_ops *pmops = func->dev.driver->pm; + err = pmops->suspend(&func->dev); if (err) break; } @@ -1076,6 +1094,7 @@ static int mmc_sdio_runtime_resume(struct mmc_host *host) static const struct mmc_bus_ops mmc_sdio_ops = { .remove = mmc_sdio_remove, .detect = mmc_sdio_detect, + .pre_suspend = mmc_sdio_pre_suspend, .suspend = mmc_sdio_suspend, .resume = mmc_sdio_resume, .runtime_suspend = mmc_sdio_runtime_suspend, |