rtc: t reaches -1, tested 0

With a postfix decrement t will reach -1 rather than 0, so neither the
warning nor the `goto error_out' will occur.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/rtc-au1xxx.c b/drivers/rtc/rtc-au1xxx.c
index 8906a68..979ed04 100644 (file)
--- a/drivers/rtc/rtc-au1xxx.c
+++ b/drivers/rtc/rtc-au1xxx.c
@@ -81,7 +81,7 @@ static int __devinit au1xtoy_rtc_probe(struct platform_device *pdev)
        if (au_readl(SYS_TOYTRIM) != 32767) {
                /* wait until hardware gives access to TRIM register */
                t = 0x00100000;
-               while ((au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S) && t--)
+               while ((au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S) && --t)
                        msleep(1);
 
                if (!t) {