3fbf100bc4b1e parent 733f0ea4498a24db5b8ac048ef99983600f1eff9 author Benoit Papillault 1271369246 +0200 committer John W. Linville 1271447214 -0400 ath5k/ath9k: Fix 64 bits TSF reads According to tests, both TSF lower and upper registers kept counting, so the higher part could have been updated after the lower part has been read, as shown in the following log where the upper part is read first and the lower part next. tsf = {00000003-fffffffd} tsf = {00000003-00000001} tsf = {00000004-0000000b} This patch corrects this by checking that the upper part has not been changed while the lower part was read. It has been tested in an IBSS network where artifical IBSS merges have been done in order to trigger hundreds of rollover for the TSF lower part. It follows the logic mentionned by Derek, with only 2 register reads needed at each additional steps instead of 3 (the minimum number of register reads is still 3). Signed-off-by: Benoit Papillault Signed-off-by: John W. Linville ˜<|