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authorManivannan Sadhasivam2022-09-14 13:23:42 +0530
committerLorenzo Pieralisi2022-10-05 16:17:27 +0200
commit19619b43f0319c7a0564f6ff35aca5f62e7cb118 (patch)
treeb85921fa640881e2d74b89caf3c577bedb9c4344 /drivers/pci
parent9cf4843e1acf08ab5c523bc4fa8f7b24de2bea3a (diff)
PCI: qcom-ep: Disable IRQs during driver remove
Disable the Global and PERST IRQs during driver remove to avoid getting spurious IRQs after resource deallocation. Link: https://lore.kernel.org/r/20220914075350.7992-5-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/controller/dwc/pcie-qcom-ep.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
index 51afd9c547f5..d7a8dd0533b0 100644
--- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
+++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
@@ -581,13 +581,13 @@ static irqreturn_t qcom_pcie_ep_perst_irq_thread(int irq, void *data)
static int qcom_pcie_ep_enable_irq_resources(struct platform_device *pdev,
struct qcom_pcie_ep *pcie_ep)
{
- int irq, ret;
+ int ret;
- irq = platform_get_irq_byname(pdev, "global");
- if (irq < 0)
- return irq;
+ pcie_ep->global_irq = platform_get_irq_byname(pdev, "global");
+ if (pcie_ep->global_irq < 0)
+ return pcie_ep->global_irq;
- ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ ret = devm_request_threaded_irq(&pdev->dev, pcie_ep->global_irq, NULL,
qcom_pcie_ep_global_irq_thread,
IRQF_ONESHOT,
"global_irq", pcie_ep);
@@ -604,7 +604,7 @@ static int qcom_pcie_ep_enable_irq_resources(struct platform_device *pdev,
"perst_irq", pcie_ep);
if (ret) {
dev_err(&pdev->dev, "Failed to request PERST IRQ\n");
- disable_irq(irq);
+ disable_irq(pcie_ep->global_irq);
return ret;
}
@@ -702,6 +702,9 @@ static int qcom_pcie_ep_remove(struct platform_device *pdev)
{
struct qcom_pcie_ep *pcie_ep = platform_get_drvdata(pdev);
+ disable_irq(pcie_ep->global_irq);
+ disable_irq(pcie_ep->perst_irq);
+
if (pcie_ep->link_status == QCOM_PCIE_EP_LINK_DISABLED)
return 0;