diff options
Diffstat (limited to 'drivers/mmc/core/sdio_bus.c')
-rw-r--r-- | drivers/mmc/core/sdio_bus.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 2716c7ab6bbf..203da443e339 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -17,6 +17,7 @@ #include <linux/pm_runtime.h> #include <linux/mmc/card.h> +#include <linux/mmc/host.h> #include <linux/mmc/sdio_func.h> #include "sdio_cis.h" @@ -132,9 +133,11 @@ static int sdio_bus_probe(struct device *dev) * it should call pm_runtime_put_noidle() in its probe routine and * pm_runtime_get_noresume() in its remove routine. */ - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto out; + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + goto out; + } /* Set the default block size so the driver is sure it's something * sensible. */ @@ -151,7 +154,8 @@ static int sdio_bus_probe(struct device *dev) return 0; disable_runtimepm: - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); out: return ret; } @@ -160,12 +164,14 @@ static int sdio_bus_remove(struct device *dev) { struct sdio_driver *drv = to_sdio_driver(dev->driver); struct sdio_func *func = dev_to_sdio_func(dev); - int ret; + int ret = 0; /* Make sure card is powered before invoking ->remove() */ - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto out; + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + goto out; + } drv->remove(func); @@ -178,10 +184,12 @@ static int sdio_bus_remove(struct device *dev) } /* First, undo the increment made directly above */ - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); /* Then undo the runtime PM settings in sdio_bus_probe() */ - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); out: return ret; @@ -191,6 +199,8 @@ out: static int sdio_bus_pm_prepare(struct device *dev) { + struct sdio_func *func = dev_to_sdio_func(dev); + /* * Resume an SDIO device which was suspended at run time at this * point, in order to allow standard SDIO suspend/resume paths @@ -212,7 +222,8 @@ static int sdio_bus_pm_prepare(struct device *dev) * since there is little point in failing system suspend if a * device can't be resumed. */ - pm_runtime_resume(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_resume(dev); return 0; } |