Commit 0ce12026 authored Jun 17, 2014 by Eliad Peller Committed by Johannes Berg Jun 23, 2014

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 <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent e33e2241

net/wireless/core.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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