[ARM] Fix Assabet reboot with SA1100 MTD map driver
Unfortunately, some devices forgot to reset the flash on reboot.
Arrange for the map driver to suspend & resume the flash to
ensure that it is in a sane state before rebooting.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index acf01ef..c81bec7 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -440,9 +440,17 @@
info->mtd->resume(info->mtd);
return 0;
}
+
+static void sa1100_mtd_shutdown(struct device *dev)
+{
+ struct sa_info *info = dev_get_drvdata(dev);
+ if (info && info->mtd->suspend(info->mtd) == 0)
+ info->mtd->resume(info->mtd);
+}
#else
#define sa1100_mtd_suspend NULL
#define sa1100_mtd_resume NULL
+#define sa1100_mtd_shutdown NULL
#endif
static struct device_driver sa1100_mtd_driver = {
@@ -452,6 +460,7 @@
.remove = __exit_p(sa1100_mtd_remove),
.suspend = sa1100_mtd_suspend,
.resume = sa1100_mtd_resume,
+ .shutdown = sa1100_mtd_shutdown,
};
static int __init sa1100_mtd_init(void)