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PCI: qcom: Disable write access to read only registers for IP v2.3.3

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In the post init sequence of v2.9.0, write access to read only registers
are not disabled after updating the registers. Fix it by disabling the
access after register update.

Link: https://lore.kernel.org/r/20230619150408.8468-2-manivannan.sadhasivam@linaro.org
Fixes: 5d76117f07 ("PCI: qcom: Add support for IPQ8074 PCIe controller")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: <stable@vger.kernel.org>
This commit is contained in:
Manivannan Sadhasivam
2023-06-19 20:34:00 +05:30
committed by Lorenzo Pieralisi
parent ac9a78681b
commit a33d700e8e
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/controller/dwc/pcie-qcom.c
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@@ -836,6 +836,8 @@ static int qcom_pcie_post_init_2_3_3(struct qcom_pcie *pcie)
writel(PCI_EXP_DEVCTL2_COMP_TMOUT_DIS, pci->dbi_base + offset +
PCI_EXP_DEVCTL2);
dw_pcie_dbi_ro_wr_dis(pci);
return 0;
}