[PATCH v3 04/12] PCI: qcom-ep: Disable IRQs during driver remove

Manivannan Sadhasivam
2022-09-10T06:31:55Z

Disable the Global and PERST IRQs during driver remove to avoid getting
spurious IRQs after resource deallocation.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/pci/controller/dwc/pcie-qcom-ep.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
index 1e09eca5b3b2..72eb6cacdb3a 100644
--- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
+++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
@@ -585,11 +585,11 @@ static int qcom_pcie_ep_enable_irq_resources(struct platform_device *pdev,
{
int irq, 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);
@@ -698,6 +698,9 @@ 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;

--
2.25.1