This is a note to let you know that I've just added the patch titled
PCI: qcom: Fix host-init error handling
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-qcom-fix-host-init-error-handling.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 96455bc9cd6976ced474147d3faba5b806632b00
Author: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Mon Oct 17 13:47:04 2022 +0200
PCI: qcom: Fix host-init error handling
[ Upstream commit 997e010de9134474dbfde52be03efd7d1bce902d ]
Implement the new host_deinit() callback so that the PHY is powered off
and regulators and clocks are disabled also on late host-init errors.
Link: https://lore.kernel.org/r/20221017114705.8277-2-johan+linaro@xxxxxxxxxx
Fixes: 82a823833f4e ("PCI: qcom: Add Qualcomm PCIe controller driver")
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index f711acacaeaf8..f8e512540fb85 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1527,8 +1527,19 @@ static int qcom_pcie_host_init(struct dw_pcie_rp *pp)
return ret;
}
+static void qcom_pcie_host_deinit(struct dw_pcie_rp *pp)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
+ struct qcom_pcie *pcie = to_qcom_pcie(pci);
+
+ qcom_ep_reset_assert(pcie);
+ phy_power_off(pcie->phy);
+ pcie->cfg->ops->deinit(pcie);
+}
+
static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
- .host_init = qcom_pcie_host_init,
+ .host_init = qcom_pcie_host_init,
+ .host_deinit = qcom_pcie_host_deinit,
};
/* Qcom IP rev.: 2.1.0 Synopsys IP rev.: 4.01a */
