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mmc: core: Extend shutdown sequence to handle bus operations

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By adding an optional .shutdown callback to the bus_ops struct we
provide the possibility to let each bus type handle it's shutdown
requirements.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Ulf Hansson 2013-06-10 17:03:41 +02:00 committed by Chris Ball
parent 7628774851
commit 6b086bde71
2 changed files with 10 additions and 0 deletions
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9
drivers/mmc/core/bus.c
View File

@ -126,8 +126,17 @@ static void mmc_bus_shutdown(struct device *dev)
{
struct mmc_driver *drv = to_mmc_driver(dev->driver);
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret;
drv->shutdown(card);
if (host->bus_ops->shutdown) {
ret = host->bus_ops->shutdown(host);
if (ret)
pr_warn("%s: error %d during shutdown\n",
mmc_hostname(host), ret);
}
}
#ifdef CONFIG_PM_SLEEP

1
drivers/mmc/core/core.h
View File

@ -26,6 +26,7 @@ struct mmc_bus_ops {
int (*power_save)(struct mmc_host *);
int (*power_restore)(struct mmc_host *);
int (*alive)(struct mmc_host *);
int (*shutdown)(struct mmc_host *);
};
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);