[MTD] [NOR] fix ctrl-alt-del can't reboot for intel flash bug

When we press ctrl-alt-del,kernel_restart_prepare will invoke 
cfi_intelext_reboot which will set flash to read array mode, but later 
when device_shutdown is invoked which may put current work queue to 
sleep and other process may be scheduled to running and programming 
flash in not FL_READY mode again. So we can't boot up if this flash is 
used for bootloader.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h
index a293a3b78e05..39e7d2a1be9a 100644
--- a/include/linux/mtd/flashchip.h
+++ b/include/linux/mtd/flashchip.h
@@ -40,6 +40,7 @@ typedef enum {
         FL_POINT,
         FL_XIP_WHILE_ERASING,
         FL_XIP_WHILE_WRITING,
+        FL_SHUTDOWN,
         FL_UNKNOWN
 } flstate_t;