EXTCODE_COMPARE_SWAP 1557 drivers/firewire/ohci.c 	    ext_tcode == EXTCODE_COMPARE_SWAP && length == 8) {
EXTCODE_COMPARE_SWAP   51 include/uapi/linux/firewire-constants.h #define TCODE_LOCK_COMPARE_SWAP		(0x10 | EXTCODE_COMPARE_SWAP)