Commit a33d700e authored by Manivannan Sadhasivam's avatar Manivannan Sadhasivam Committed by Lorenzo Pieralisi
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PCI: qcom: Disable write access to read only registers for IP v2.3.3 

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: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: default avatarLorenzo Pieralisi <lpieralisi@kernel.org>
Cc: <stable@vger.kernel.org>
parent ac9a7868

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

+2 −0
Original line number Diff line number Diff line
@@ -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;

}