Extern or forward variable declaration at include/linux/mmc/host.h, line 468 References: arch/arm/mach-integrator/integrator_cp.c, line 122 arch/arm/mach-omap2/pdata-quirks.c, line 580 arch/arm/mach-versatile/versatile_dt.c, line 126 arch/arm/mach-versatile/versatile_dt.c, line 162 arch/powerpc/platforms/83xx/mpc832x_rdb.c, line 44 arch/powerpc/platforms/83xx/mpc832x_rdb.c, line 192 drivers/mmc/host/wmt-sdmmc.c, line 753 drivers/net/wireless/marvell/mwifiex/main.h, line 1006 drivers/net/wireless/marvell/mwifiex/main.h, line 1599 drivers/net/wireless/ti/wlcore/sdio.c, line 224