dev_attr_cover_switch 505 drivers/mmc/host/android-goldfish.c ret = device_create_file(&pdev->dev, &dev_attr_cover_switch); dev_attr_cover_switch 1289 drivers/mmc/host/omap.c &dev_attr_cover_switch); dev_attr_cover_switch 1313 drivers/mmc/host/omap.c device_remove_file(&mmc->class_dev, &dev_attr_cover_switch);