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iwlagn: default to MAX_UCODE_BEACON_INTERVAL in iwl_adjust_beacon_interval

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Default to MAX_UCODE_BEACON_INTERVAL if the output of
iwl_adjust_beacon_interval would otherwise be zero.  This prevents a
division by zero on my iwl5300-equipped Lenovo T400 with kernels that
include "mac80211: use cfg80211s BSS infrastructure".

This patch is a bit of a hack -- I'm not sure why iwl_setup_rxon_timing
is giving iwl_adjust_beacon_interval a zero input (which is the only way
it would output zero).  I would be happy to have a better fix.  But for
now, this makes my box boot...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2009-02-20 19:03:31 -05:00
parent c493b017e0
commit 41d2f291d7
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/iwlwifi/iwl-agn.c
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@ -644,6 +644,9 @@ static u16 iwl_adjust_beacon_interval(u16 beacon_val)
/ MAX_UCODE_BEACON_INTERVAL;
new_val = beacon_val / beacon_factor;
if (!new_val)
new_val = MAX_UCODE_BEACON_INTERVAL;
return new_val;
}