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| author | Eric Sandeen <sandeen@redhat.com> | 2008-01-24 15:47:39 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-31 19:26:47 -0800 |
| commit | 9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83 (patch) | |
| tree | 57ea08c17f64dcb8c42b9a94793313e412d3a023 /drivers | |
| parent | 303d9bf6bb64ead8e3f1d7e29904a4025502e591 (diff) | |
| download | linux-9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83.tar.gz | |
iwlwifi: correct math in elapsed_jiffies
w/o the first change: if end == start you get MAX_JIFFY_OFFSET which isn't what you want... For the latter I think to be technically correct you need the +1 to account for the jiffy between MAX_JIFFY_OFFSET and 0 (hmm w/ the 2nd change the first isn't strictly needed... ah well) Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-helpers.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h index cd2eb1848310..cb009f4c401f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-helpers.h +++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h @@ -246,10 +246,10 @@ static inline int iwl_check_bits(unsigned long field, unsigned long mask) static inline unsigned long elapsed_jiffies(unsigned long start, unsigned long end) { - if (end > start) + if (end >= start) return end - start; - return end + (MAX_JIFFY_OFFSET - start); + return end + (MAX_JIFFY_OFFSET - start) + 1; } static inline u8 iwl_get_dma_hi_address(dma_addr_t addr) |