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commit42420c50c6upstream. The zpci_create_device() function returns an error pointer that needs to be checked before dereferencing it as a struct zpci_dev pointer. Add the missing check in __clp_add() where it was missed when adding the scan_list in the fixed commit. Simply not adding the device to the scan list results in the previous behavior. Cc: stable@vger.kernel.org Fixes:0467cdde8c("s390/pci: Sort PCI functions prior to creating virtual busses") Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>