[PARISC] fix uninitialized variable warning in asm/rtc.h

get_rtc_time, in the case that PDC returns that the battery is bad, returns
an unmodified rtc_time arg to the caller, which then uses uninitialized
values. Fix this by memset-ing the arg with zeroes, so it will at least be
cleared if we return failure.

Spotted by John David Anglin.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>

diff --git a/include/asm-parisc/rtc.h b/include/asm-parisc/rtc.h
index f4ebff1..099d641 100644 (file)
--- a/include/asm-parisc/rtc.h
+++ b/include/asm-parisc/rtc.h
@@ -50,10 +50,10 @@ static inline unsigned int get_rtc_time(struct rtc_time *wtime)
        long int days, rem, y;
        const unsigned short int *ip;
 
-       if(pdc_tod_read(&tod_data) < 0)
+       memset(wtime, 0, sizeof(*wtime));
+       if (pdc_tod_read(&tod_data) < 0)
                return RTC_24H | RTC_BATT_BAD;
 
-
        // most of the remainder of this function is:
 //     Copyright (C) 1991, 1993, 1997, 1998 Free Software Foundation, Inc.
 //     This was originally a part of the GNU C Library.