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[ Upstream commitbefdf8978a] pci_match_id() just match the static pci_device_id, which may return NULL if someone binds the driver to a device manually using /sys/bus/pci/drivers/.../new_id. This patch wrap up a helper function __mlx4_remove_one() which does the tear down function but preserve the drv_data. Functions like mlx4_pci_err_detected() and mlx4_restart_one() will call this one with out releasing drvdata. Fixes:97a5221"net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset". CC: Bjorn Helgaas <bhelgaas@google.com> CC: Amir Vadai <amirv@mellanox.com> CC: Jack Morgenstein <jackm@dev.mellanox.co.il> CC: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com> Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>