tree 121553c9ebc44f7bd541370e38f2b3c9c7cd9114
parent 9871e9bb5cf6ff0b51457ca74c270c5c5230b224
author Lucas Stach <l.stach@pengutronix.de> 1495490790 -0500
committer Bjorn Helgaas <bhelgaas@google.com> 1495490790 -0500

PCI: imx6: Fix config read timeout handling

Commit cc7b0d495589 ("PCI: designware: Update PCI config space remap
function") made PCI configuration requests non-posted, which means we now
get a synchronous abort when the CFG space read to probe for downstream
devices times out.

Synchronous aborts need to be handled differently from the async aborts we
were getting before, in particular the PC needs to be advanced when
resolving the abort.  This is mostly a copy of what other PCI drivers do on
ARM to handle those aborts.

[bhelgaas: changelog, "Fixes"]
Fixes: cc7b0d495589 ("PCI: designware: Update PCI config space remap function")
Tested-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Richard Zhu <hongxing.zhu@nxp.com>