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| author | Brian Norris <computersforpeace@gmail.com> | 2014-11-26 10:01:08 +0100 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-01-08 02:54:22 +0100 |
| commit | 3efe41be224c4441f2a872a25471a14d85ceb7c6 (patch) | |
| tree | 4ad8e184902893b5cffa0159e0bf9fdb2ea753c2 /drivers/mtd | |
| parent | mtd: mtdblock: remove the needless mtdblks_lock (diff) | |
| download | linux-3efe41be224c4441f2a872a25471a14d85ceb7c6.tar.xz linux-3efe41be224c4441f2a872a25471a14d85ceb7c6.zip | |
mtd: implement common reboot notifier boilerplate
cfi_cmdset_000{1,2}.c already implement their own reboot notifiers, and
we're going to add one for NAND. Let's put the boilerplate in one place.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Scott Branden <sbranden@broadcom.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 4c611871d7e6..cbc0fc46d2d6 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -37,6 +37,7 @@ #include <linux/backing-dev.h> #include <linux/gfp.h> #include <linux/slab.h> +#include <linux/reboot.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -365,6 +366,17 @@ static struct device_type mtd_devtype = { .release = mtd_release, }; +static int mtd_reboot_notifier(struct notifier_block *n, unsigned long state, + void *cmd) +{ + struct mtd_info *mtd; + + mtd = container_of(n, struct mtd_info, reboot_notifier); + mtd->_reboot(mtd); + + return NOTIFY_DONE; +} + /** * add_mtd_device - register an MTD device * @mtd: pointer to new MTD device info structure @@ -565,6 +577,11 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types, err = -ENODEV; } + if (mtd->_reboot) { + mtd->reboot_notifier.notifier_call = mtd_reboot_notifier; + register_reboot_notifier(&mtd->reboot_notifier); + } + return err; } EXPORT_SYMBOL_GPL(mtd_device_parse_register); @@ -579,6 +596,9 @@ int mtd_device_unregister(struct mtd_info *master) { int err; + if (master->_reboot) + unregister_reboot_notifier(&master->reboot_notifier); + err = del_mtd_partitions(master); if (err) return err; |