lkml.org 
[lkml]   [2021]   [Jul]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH V3 0/3] driver core: Add ability to delete device links of unregistered devices
Date
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.

Since V2, these 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 V3:

driver core: Prevent warning when removing a device link from unregistered consumer
New patch split from "driver core: Add ability to delete device
links of unregistered devices" except first chunk from that patch
dropped as unnecessary

driver core: Add ability to delete device links of unregistered devices
Move warning fix to separate patch.


Changes in V2:

Take approach suggested by Rafael


Adrian Hunter (3):
driver core: Prevent warning when removing a device link from unregistered consumer
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 | 8 ++++++--
drivers/scsi/ufs/ufshcd.c | 23 +++++++++++++++++++++--
2 files changed, 27 insertions(+), 4 deletions(-)


Regards
Adrian

\
 
 \ /
  Last update: 2021-07-10 12:39    [W:0.435 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site