long vs. unsigned long - low-hanging fruits in drivers

deal with signedness of the stuff passed to set_bit() et.al.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/net/wireless/hostap/hostap_wlan.h b/drivers/net/wireless/hostap/hostap_wlan.h
index c27b2c1..e6516a1 100644
--- a/drivers/net/wireless/hostap/hostap_wlan.h
+++ b/drivers/net/wireless/hostap/hostap_wlan.h
@@ -661,7 +661,7 @@
 #define HOSTAP_BITS_TRANSMIT 0
 #define HOSTAP_BITS_BAP_TASKLET 1
 #define HOSTAP_BITS_BAP_TASKLET2 2
-	long bits;
+	unsigned long bits;
 
 	struct ap_data *ap;