[SERIAL] Fix oops when removing suspended serial port

A serial card might have been removed when the system is resumed.
This results in a suspended port being shut down, which results in
the ports shutdown method being called twice in a row.  This causes
BUGs.  Avoid this by tracking the suspended state separately from
the initialised state.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 86501a3de2ac..f9fdf97506ea 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -319,6 +319,7 @@ struct uart_info {
 #define UIF_CTS_FLOW            ((__force uif_t) (1 << 26))
 #define UIF_NORMAL_ACTIVE       ((__force uif_t) (1 << 29))
 #define UIF_INITIALIZED         ((__force uif_t) (1 << 31))
+#define UIF_SUSPENDED           ((__force uif_t) (1 << 30))
 
         int                     blocked_open;