From: Ulf Hansson <ulf.hans...@linaro.org>
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.hans...@linaro.org>
---
drivers/mmc/card/block.c | 15 +++++++++++++--
drivers/mmc/card/mmc_test.c | 5 +++++
drivers/mmc/core/bus.c | 9 +++++++++
include/linux/mmc/card.h | 1 +
4 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c900d28..d91507f 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2400,8 +2400,7 @@ 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);
@@ -2416,6 +2415,17 @@ 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;
@@ -2448,6 +2458,7 @@ 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)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 759714e..a69df52 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -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)
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 3b7ca8a..219bf4b 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -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,
};
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 6a98f32..842de3e 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -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 *);
--
1.7.10
--
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