PCI: designware: Ensure ATU is enabled before IO/conf space accesses

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Read back the ATU CR2 register to ensure ATU programming is effective
before any subsequent I/O or config space accesses.

Without this, PCI device enumeration is unreliable.

[bhelgaas: changelog, comment]
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>

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Stanimir Varbanov 2015-12-18 14:38:55 +02:00 • committed by Bjorn Helgaas

parent 1ec218373b

commit 17209dfb35

1 changed files with 8 additions and 0 deletions

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drivers/pci/host/pcie-designware.c

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