diff options
| author | Dexuan Cui <decui@microsoft.com> | 2019-03-04 21:34:48 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 19:41:31 +0200 |
| commit | 76888d135c4e6630e3110a93e667d66b07d2bfaa (patch) | |
| tree | bec50d199188d063c77e97cbe750d4f0fb206996 /kernel/locking | |
| parent | a47e0054253f69f2036d5dbce81f6c1cff9f0eb4 (diff) | |
PCI: hv: Add hv_pci_remove_slots() when we unload the driver
commit 15becc2b56c6eda3d9bf5ae993bafd5661c1fad1 upstream.
When we unload the pci-hyperv host controller driver, the host does not
send us a PCI_EJECT message.
In this case we also need to make sure the sysfs PCI slot directory is
removed, otherwise a command on a slot file eg:
"cat /sys/bus/pci/slots/2/address"
will trigger a
"BUG: unable to handle kernel paging request"
and, if we unload/reload the driver several times we would end up with
stale slot entries in PCI slot directories in /sys/bus/pci/slots/
root@localhost:~# ls -rtl /sys/bus/pci/slots/
total 0
drwxr-xr-x 2 root root 0 Feb 7 10:49 2
drwxr-xr-x 2 root root 0 Feb 7 10:49 2-1
drwxr-xr-x 2 root root 0 Feb 7 10:51 2-2
Add the missing code to remove the PCI slot and fix the current
behaviour.
Fixes: a15f2c08c708 ("PCI: hv: support reporting serial number as slot information")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
[lorenzo.pieralisi@arm.com: reformatted the log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/locking')
0 files changed, 0 insertions, 0 deletions