Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83
Commit:     9e7d1a445ed0d5c1d8863945d6c4c6f018a4aa83
Parent:     303d9bf6bb64ead8e3f1d7e29904a4025502e591
Author:     Eric Sandeen <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 24 15:47:39 2008 -0500
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Thu Jan 31 19:26:47 2008 -0800

    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 <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
 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)
-
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