mtd: change struct flchip_shared spinlock locking into mutex
This patch prevent to schedule while atomic by changing the
flchip_shared spinlock into a mutex. This should be save since no atomic
path will use this lock.
It was suggested by Arnd Bergmann and Vasiliy Kulikov.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h
index f43e9b4..23cc10f 100644
--- a/include/linux/mtd/flashchip.h
+++ b/include/linux/mtd/flashchip.h
@@ -92,7 +92,7 @@
/* This is used to handle contention on write/erase operations
between partitions of the same physical chip. */
struct flchip_shared {
- spinlock_t lock;
+ struct mutex lock;
struct flchip *writing;
struct flchip *erasing;
};