Luis R. Rodriguez 85fd129a72 cfg80211: add wiphy_idx_valid to check for wiphy_idx sanity
This will later be used by others, for now make use of it in
cfg80211_drv_by_wiphy_idx() to return early if an invalid
wiphy_idx has been provided.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-02-27 14:52:54 -05:00
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