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mmc: core: Handle card shutdown from mmc_bus

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Considering shutdown of the card, the responsibility to initate this
sequence shall be driven from the mmc_bus.

This patch enables the mmc_bus to handle this sequence properly. A new
.shutdown callback is added in the mmc_driver struct which is used to
shutdown the blk device.

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 17:03:40 +02:00 committed by Chris Ball
parent 986892ca78
commit 7628774851
4 changed files with 28 additions and 2 deletions
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15
drivers/mmc/card/block.c
View File

@ -2403,8 +2403,7 @@ static void mmc_blk_remove(struct mmc_card *card)
mmc_set_drvdata(card, NULL);
}
#ifdef CONFIG_PM
static int mmc_blk_suspend(struct mmc_card *card)
static int _mmc_blk_suspend(struct mmc_card *card)
{
struct mmc_blk_data *part_md;
struct mmc_blk_data *md = mmc_get_drvdata(card);
@ -2419,6 +2418,17 @@ static int mmc_blk_suspend(struct mmc_card *card)
return 0;
}
static void mmc_blk_shutdown(struct mmc_card *card)
{
_mmc_blk_suspend(card);
}
#ifdef CONFIG_PM
static int mmc_blk_suspend(struct mmc_card *card)
{
return _mmc_blk_suspend(card);
}
static int mmc_blk_resume(struct mmc_card *card)
{
struct mmc_blk_data *part_md;
@ -2451,6 +2461,7 @@ static struct mmc_driver mmc_driver = {
.remove = mmc_blk_remove,
.suspend = mmc_blk_suspend,
.resume = mmc_blk_resume,
.shutdown = mmc_blk_shutdown,
};
static int __init mmc_blk_init(void)

5
drivers/mmc/card/mmc_test.c
View File

@ -3025,12 +3025,17 @@ static void mmc_test_remove(struct mmc_card *card)
mmc_test_free_dbgfs_file(card);
}
static void mmc_test_shutdown(struct mmc_card *card)
{
}
static struct mmc_driver mmc_driver = {
.drv = {
.name = "mmc_test",
},
.probe = mmc_test_probe,
.remove = mmc_test_remove,
.shutdown = mmc_test_shutdown,
};
static int __init mmc_test_init(void)

9
drivers/mmc/core/bus.c
View File

@ -122,6 +122,14 @@ static int mmc_bus_remove(struct device *dev)
return 0;
}
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);
drv->shutdown(card);
}
#ifdef CONFIG_PM_SLEEP
static int mmc_bus_suspend(struct device *dev)
{
@ -205,6 +213,7 @@ static struct bus_type mmc_bus_type = {
.uevent = mmc_bus_uevent,
.probe = mmc_bus_probe,
.remove = mmc_bus_remove,
.shutdown = mmc_bus_shutdown,
.pm = &mmc_bus_pm_ops,
};

1
include/linux/mmc/card.h
View File

@ -520,6 +520,7 @@ struct mmc_driver {
void (*remove)(struct mmc_card *);
int (*suspend)(struct mmc_card *);
int (*resume)(struct mmc_card *);
void (*shutdown)(struct mmc_card *);
};
extern int mmc_register_driver(struct mmc_driver *);