From db621f174d2c017d960089ea8cbc91c0763f1069 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sat, 30 Sep 2006 23:28:16 -0700 Subject: [PATCH] RTC class: error checks The rtc_is_valid_tm() routine needs to treat some of the fields it checks as unsigned, to prevent wrongly accepting invalid rtc_time structs; this is the same approach used elsewhere in the RTC code for such tests. Conversely, rtc_proc_show() is missing one invalid-day-of-month test that rtc_is_valid_tm() makes: there is no day zero. Signed-off-by: David Brownell Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-lib.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/rtc/rtc-lib.c') diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c index 9812120f3a7..ba795a4db1e 100644 --- a/drivers/rtc/rtc-lib.c +++ b/drivers/rtc/rtc-lib.c @@ -94,12 +94,12 @@ EXPORT_SYMBOL(rtc_time_to_tm); int rtc_valid_tm(struct rtc_time *tm) { if (tm->tm_year < 70 - || tm->tm_mon >= 12 + || ((unsigned)tm->tm_mon) >= 12 || tm->tm_mday < 1 || tm->tm_mday > rtc_month_days(tm->tm_mon, tm->tm_year + 1900) - || tm->tm_hour >= 24 - || tm->tm_min >= 60 - || tm->tm_sec >= 60) + || ((unsigned)tm->tm_hour) >= 24 + || ((unsigned)tm->tm_min) >= 60 + || ((unsigned)tm->tm_sec) >= 60) return -EINVAL; return 0; -- cgit v1.2.3