Input: ambakmi - fix timeout handling in amba_kmi_write()

With a postfix decrement timeleft reaches -1 rather than 0,
but after the loop it is tested to have become 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index af159c7..e29cdc1 100644 (file)
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -57,7 +57,7 @@ static int amba_kmi_write(struct serio *io, unsigned char val)
        struct amba_kmi_port *kmi = io->port_data;
        unsigned int timeleft = 10000; /* timeout in 100ms */
 
-       while ((readb(KMISTAT) & KMISTAT_TXEMPTY) == 0 && timeleft--)
+       while ((readb(KMISTAT) & KMISTAT_TXEMPTY) == 0 && --timeleft)
                udelay(10);
 
        if (timeleft)