*** Warning: "platform_bus_type" [drivers/pcmcia/tcic.ko] undefined!
*** Warning: "platform_bus_type" [drivers/pcmcia/i82365.ko] undefined!
grep -ir platform_bus_type include drivers
include/linux/device.h:extern struct bus_type platform_bus_type;
drivers/base/platform.c: pdev->dev.bus = &platform_bus_type;
drivers/base/platform.c:struct bus_type platform_bus_type = {
drivers/base/platform.c: return bus_register(&platform_bus_type);
drivers/pcmcia/tcic.c: .bus = &platform_bus_type,
drivers/pcmcia/hd64465_ss.c: .bus = &platform_bus_type,
drivers/pcmcia/sa1100_generic.c: .bus = &platform_bus_type,
drivers/pcmcia/i82365.c: .bus = &platform_bus_type,
grep -i pcmcia .config
# Bus options (PCI, PCMCIA, EISA, MCA, ISA)
# PCMCIA/CardBus support
CONFIG_PCMCIA=m
# CONFIG_PARPORT_PC_PCMCIA is not set
# PCMCIA SCSI adapter support
# CONFIG_SCSI_PCMCIA is not set
# CONFIG_PCMCIA_XIRCOM is not set
# CONFIG_PCMCIA_XIRTULIP is not set
# PCMCIA network device support
CONFIG_NET_PCMCIA=y
CONFIG_PCMCIA_3C589=m
CONFIG_PCMCIA_3C574=m
CONFIG_PCMCIA_FMVJ18X=m
CONFIG_PCMCIA_PCNET=m
CONFIG_PCMCIA_NMCLAN=m
CONFIG_PCMCIA_SMC91C92=m
CONFIG_PCMCIA_XIRC2PS=m
# CONFIG_PCMCIA_AXNET is not set
# PCMCIA character devices