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Dexuan Cui authored
commit 15becc2b 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: a15f2c08 ("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>
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