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author | Eric Sandeen <sandeen@redhat.com> | 2008-01-24 20:47:39 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2008-02-01 03:26:47 (GMT) |
commit | 9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83 (patch) | |
tree | 57ea08c17f64dcb8c42b9a94793313e412d3a023 /drivers/net/wireless/iwlwifi/iwl-helpers.h | |
parent | 303d9bf6bb64ead8e3f1d7e29904a4025502e591 (diff) | |
download | linux-fsl-qoriq-9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83.tar.xz |
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/net/wireless/iwlwifi/iwl-helpers.h')
-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 cd2eb18..cb009f4 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) |