DEV_ID_SHIFT 17 drivers/base/platform-msi.c #define MAX_DEV_MSIS (1 << (32 - DEV_ID_SHIFT)) DEV_ID_SHIFT 45 drivers/base/platform-msi.c return (devid << (32 - DEV_ID_SHIFT)) | desc->platform.msi_index; DEV_ID_SHIFT 223 drivers/base/platform-msi.c 0, 1 << DEV_ID_SHIFT, GFP_KERNEL);