From: Mike Snitzer <snitzer@redhat.com>
To: hare@suse.de, "Martin K. Petersen" <martin.petersen@oracle.com>,
Ewan Milne <emilne@redhat.com>,
linux-scsi@vger.kernel.org
Cc: dm-devel@redhat.com, kbuild test robot <fengguang.wu@intel.com>,
kbuild-all@01.org, linux-kernel@vger.kernel.org
Subject: Re: ERROR: "scsi_device_from_queue" [drivers/md/dm-multipath.ko] undefined!
Date: Mon, 12 Mar 2018 11:40:16 -0400 [thread overview]
Message-ID: <20180312154016.GA29395@redhat.com> (raw)
In-Reply-To: <201803110354.yaesL1Mi%fengguang.wu@intel.com>
On Sat, Mar 10 2018 at 2:29pm -0500,
kbuild test robot <fengguang.wu@intel.com> 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 *,
parent reply other threads:[~2018-03-12 15:40 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <201803110354.yaesL1Mi%fengguang.wu@intel.com>]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180312154016.GA29395@redhat.com \
--to=snitzer@redhat.com \
--cc=dm-devel@redhat.com \
--cc=emilne@redhat.com \
--cc=fengguang.wu@intel.com \
--cc=hare@suse.de \
--cc=kbuild-all@01.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).