Commit 35c95eda authored Jun 19, 2023 by Manivannan Sadhasivam Committed by Greg Kroah-Hartman Jul 27, 2023

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

commit a33d700e8eea76c62120cb3dbf5e01328f18319a upstream.

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: 5d76117f ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b0aac779

drivers/pci/controller/dwc/pcie-qcom.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -807,6 +807,8 @@ static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie)
		return PTR_ERR(res->phy_ahb_reset);
		}

		dw_pcie_dbi_ro_wr_dis(pci);

		return 0;
		}