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PCI: dwc: designware: Test PCIE_ATU_ENABLE bit specifically

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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: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
This commit is contained in:
Jisheng Zhang 2017-07-18 14:48:21 +08:00 committed by Bjorn Helgaas
parent 684a3a91da
commit e9be4d7861
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/dwc/pcie-designware.c
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@ -178,7 +178,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
*/
for (retries = 0; retries < LINK_WAIT_MAX_IATU_RETRIES; retries++) {
val = dw_pcie_readl_dbi(pci, PCIE_ATU_CR2);
if (val == PCIE_ATU_ENABLE)
if (val & PCIE_ATU_ENABLE)
return;
usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX);