From: Bart Van Assche <bvanassche@acm.org>
To: Bart Van Assche <bvanassche@acm.org>
Cc: James Bottomley <jbottomley@parallels.com>,
Mike Christie <michaelc@cs.wisc.edu>,
Hannes Reinecke <hare@suse.de>, Chanho Min <chanho.min@lge.com>,
Joe Lawrence <jdl1291@gmail.com>,
linux-scsi <linux-scsi@vger.kernel.org>,
David Milburn <dmilburn@redhat.com>, Tejun Heo <tj@kernel.org>
Subject: [PATCH v12 3/6] Restrict device state changes allowed via sysfs
Date: Thu, 27 Jun 2013 16:54:34 +0200 [thread overview]
Message-ID: <51CC522A.4010805@acm.org> (raw)
In-Reply-To: <51CC5176.90609@acm.org>
Restrict the SCSI device state changes allowd via sysfs to the
OFFLINE<>RUNNING transitions. Other transitions may confuse
the SCSI mid-layer. As an example, changing the state of a SCSI
device via sysfs into "cancel" or "deleted" prevents removal of
a SCSI device by scsi_remove_host().
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Hannes Reinecke <hare@suse.de>
Cc: David Milburn <dmilburn@redhat.com>
---
drivers/scsi/scsi_sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 931a7d9..013c6de 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -605,7 +605,7 @@ store_state_field(struct device *dev, struct device_attribute *attr,
break;
}
}
- if (!state)
+ if (state != SDEV_OFFLINE && state != SDEV_RUNNING)
return -EINVAL;
if (scsi_device_set_state(sdev, state))
--
1.7.10.4
next prev parent reply other threads:[~2013-06-27 14:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 14:51 [PATCH v12 0/6] SCSI device removal fixes Bart Van Assche
2013-06-27 14:52 ` [PATCH v12 1/6] Fix race between starved list and device removal Bart Van Assche
2013-06-27 14:53 ` [PATCH v12 2/6] Avoid calling __scsi_remove_device() twice Bart Van Assche
2013-07-01 7:05 ` James Bottomley
2013-07-01 7:14 ` Bart Van Assche
2013-07-01 14:38 ` James Bottomley
2013-06-27 14:54 ` Bart Van Assche [this message]
2013-07-01 8:23 ` [PATCH v12 3/6] Restrict device state changes allowed via sysfs Hannes Reinecke
2013-07-01 14:51 ` James Bottomley
2013-06-27 14:55 ` [PATCH v12 4/6] Avoid saving/restoring interrupt state inside scsi_remove_host() Bart Van Assche
2013-06-27 14:56 ` [PATCH v12 5/6] Avoid that scsi_device_set_state() triggers a race Bart Van Assche
2013-07-01 14:49 ` James Bottomley
2013-07-01 15:17 ` Bart Van Assche
2013-07-01 16:52 ` James Bottomley
2013-07-02 6:42 ` Bart Van Assche
2013-06-27 14:57 ` [PATCH v12 6/6] Avoid re-enabling I/O after the transport became offline Bart Van Assche
2013-07-01 8:27 ` Hannes Reinecke
2013-07-01 12:05 ` Bart Van Assche
2013-07-01 12:09 ` Hannes Reinecke
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=51CC522A.4010805@acm.org \
--to=bvanassche@acm.org \
--cc=chanho.min@lge.com \
--cc=dmilburn@redhat.com \
--cc=hare@suse.de \
--cc=jbottomley@parallels.com \
--cc=jdl1291@gmail.com \
--cc=linux-scsi@vger.kernel.org \
--cc=michaelc@cs.wisc.edu \
--cc=tj@kernel.org \
/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).