All of lore.kernel.org
 help / color / mirror / Atom feed
From: Adrian Hunter <adrian.hunter@intel.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Saravana Kannan <saravanak@google.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	"James E . J . Bottomley" <jejb@linux.ibm.com>,
	linux-scsi@vger.kernel.org, Avri Altman <avri.altman@wdc.com>,
	Bean Huo <huobean@gmail.com>, Can Guo <cang@codeaurora.org>,
	Asutosh Das <asutoshd@codeaurora.org>,
	Bart Van Assche <bvanassche@acm.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH V2 0/2] driver core: Add ability to delete device links of unregistered devices
Date: Fri,  9 Jul 2021 09:43:39 +0300	[thread overview]
Message-ID: <20210709064341.6206-1-adrian.hunter@intel.com> (raw)

Hi

There is an issue with the SCSI UFS driver when the optional
BOOT well-known LUN fails to probe, which is not a fatal error.
The issue is that the device and its "managed" device link do not
then get deleted.  The device because the device link has a
reference to it.  The device link because it can only be deleted
by device_del(), but device_add() was never called, so device_del()
never will be either.

These V2 patches fix the issue by amending device link removal to accept
removal of a link with an unregistered consumer device, as suggested
by Rafael.


Changes in V2:

	Take approach suggested by Rafael


Adrian Hunter (2):
      driver core: Add ability to delete device links of unregistered devices
      scsi: ufshcd: Fix device links when BOOT WLUN fails to probe

 drivers/base/core.c       | 11 ++++++++---
 drivers/scsi/ufs/ufshcd.c | 23 +++++++++++++++++++++--
 2 files changed, 29 insertions(+), 5 deletions(-)


Regards
Adrian

             reply	other threads:[~2021-07-09  6:43 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-09  6:43 Adrian Hunter [this message]
2021-07-09  6:43 ` [PATCH V2 1/2] driver core: Add ability to delete device links of unregistered devices Adrian Hunter
2021-07-09  9:55   ` Greg Kroah-Hartman
2021-07-09 11:19     ` Rafael J. Wysocki
2021-07-09 11:28   ` Rafael J. Wysocki
2021-07-09 13:18     ` Adrian Hunter
2021-07-09  6:43 ` [PATCH V2 2/2] scsi: ufshcd: Fix device links when BOOT WLUN fails to probe Adrian Hunter

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=20210709064341.6206-1-adrian.hunter@intel.com \
    --to=adrian.hunter@intel.com \
    --cc=asutoshd@codeaurora.org \
    --cc=avri.altman@wdc.com \
    --cc=bvanassche@acm.org \
    --cc=cang@codeaurora.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=huobean@gmail.com \
    --cc=jejb@linux.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=rafael@kernel.org \
    --cc=saravanak@google.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.