On Sat, Mar 10 2018 at 2:29pm -0500, kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 3266b5bd97eaa72793df0b6e5a106c69ccc166c4 > commit: 8d47e65948ddea4398892946d9e50778a316b397 dm mpath: remove unnecessary NVMe branching in favor of scsi_dh checks > date: 4 days ago > config: x86_64-randconfig-x004-201810 (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 8d47e65948ddea4398892946d9e50778a316b397 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > >> ERROR: "scsi_device_from_queue" [drivers/md/dm-multipath.ko] undefined! > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation This error is due to CONFIG_SCSI not being set. DM commit 8d47e6594 ("dm mpath: remove unnecessary NVMe branching in favor of scsi_dh checks") updated dm-mpath.c to call scsi_device_from_queue() to determine if a device is SCSI. The following patch fixes the buildbot reported case when CONFIG_SCSI isn't set... but it is unclear if this is the best way forward. I don't want to make CONFIG_DM_MULTIPATH depend on CONFIG_SCSI, as such we either need the following patch or the equivalent in a dm-mpath.c wrapper. Thoughts? diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 7ae177c..d6bcc96 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -333,7 +333,14 @@ extern int scsi_add_device(struct Scsi_Host *host, uint channel, extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh); void scsi_attach_vpd(struct scsi_device *sdev); +#ifdef CONFIG_SCSI extern struct scsi_device *scsi_device_from_queue(struct request_queue *q); +#else +static inline struct scsi_device *scsi_device_from_queue(struct request_queue *q) +{ + return NULL; +} +#endif extern int __must_check scsi_device_get(struct scsi_device *); extern void scsi_device_put(struct scsi_device *); extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
