PCI/AER: Clear AER status from Root Port when resetting Downstream Port

The pci_dev parameter given to aer_root_reset() may be a Downstream Port
rather than the Root Port. Get the Root Port from the provided device in
order to clear the root's AER status.

Link: https://lore.kernel.org/r/20210104230300.1277180-3-kbusch@kernel.org
Tested-by: Hedi Berriche <hedi.berriche@hpe.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Sean V Kelley <sean.v.kelley@intel.com>
Acked-by: Hedi Berriche <hedi.berriche@hpe.com>

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index 77b0f2c45bc0e06004984b84f529b261e076ab27..3fd4aaaa627e30806a1135a69c0a74ec9d46f6c8 100644 (file)
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -1388,7 +1388,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
        if (type == PCI_EXP_TYPE_RC_END)
                root = dev->rcec;
        else
-               root = dev;
+               root = pcie_find_root_port(dev);
 
        /*
         * If the platform retained control of AER, an RCiEP may not have