PCI: dwc: designware: Test PCIE_ATU_ENABLE bit specifically
The ATU CTRL2 register is 32 bits, and bits other than the enable bit may be set. To check whether the ATU is enabled or not, we should test the enable bit specifically. Signed-off-by: NJisheng Zhang <jszhang@marvell.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NJoao Pinto <jpinto@synopsys.com> Acked-by: NJingoo Han <jingoohan1@gmail.com>
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