From: Eliad Peller Date: Tue, 17 Jun 2014 10:07:02 +0000 (+0300) Subject: cfg80211: fix elapsed_jiffies calculation X-Git-Tag: v5.15~17544^2~11^2~1^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0ce12026d6ea4a24d52ddcde36b9643f2e26d560;p=platform%2Fkernel%2Flinux-starfive.git cfg80211: fix elapsed_jiffies calculation MAX_JIFFY_OFFSET has no meaning when calculating the elapsed jiffies, as jiffies run out until ULONG_MAX. This miscalculation results in erroneous values in case of a wrap-around. Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg --- diff --git a/net/wireless/core.h b/net/wireless/core.h index e9afbf1..7e3a3cef7 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -424,7 +424,7 @@ static inline unsigned int elapsed_jiffies_msecs(unsigned long start) if (end >= start) return jiffies_to_msecs(end - start); - return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1); + return jiffies_to_msecs(end + (ULONG_MAX - start) + 1); } void