PIFS              123 drivers/net/wireless/ralink/rt2x00/rt2x00.h #define DIFS			(PIFS + SLOT_TIME)
PIFS               83 drivers/net/wireless/ralink/rt2x00/rt2x00config.c 	erp.pifs = bss_conf->use_short_slot ? SHORT_PIFS : PIFS;
PIFS              221 drivers/staging/rtl8192e/rtl8192e/r8190P_def.h 	u8	PIFS:1;
PIFS              197 drivers/staging/rtl8192u/r8192U.h 	u8	PIFS:1;