Extern or forward variable declaration at drivers/scsi/scsi.h, line 42 References: drivers/scsi/aha152x.c, line 1232 drivers/scsi/aha152x.c, line 2898 drivers/scsi/aha1740.c, line 503 drivers/scsi/arm/acornscsi.c, line 2798 drivers/scsi/arm/fas216.c, line 2557 drivers/scsi/arm/fas216.c, line 2991 drivers/scsi/gdth.c, line 445 drivers/scsi/gdth.c, line 491 drivers/scsi/gdth.c, line 3964 drivers/scsi/gdth.c, line 3968 drivers/scsi/gdth.c, line 4657 drivers/scsi/ips.c, line 1141 drivers/scsi/ips.c, line 1192 drivers/scsi/megaraid.c, line 2798 drivers/scsi/qlogicfas408.c, line 468 drivers/scsi/scsi.h, line 42 drivers/scsi/sg.c, line 163 drivers/scsi/sg.c, line 1162 drivers/scsi/sg.c, line 1448 drivers/scsi/sg.c, line 1512 drivers/scsi/sg.c, line 1612 drivers/scsi/sg.c, line 2488 drivers/scsi/sg.c, line 2514 drivers/scsi/sg.c, line 2613 drivers/usb/image/microtek.c, line 321 drivers/usb/image/microtek.c, line 327