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authorManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>2023-01-24 10:11:54 +0300
committerKrzysztof Wilczyński <kwilczynski@kernel.org>2023-02-14 01:26:45 +0300
commitda87d35a6e51480703d6f055e7a1b52c85731d7e (patch)
tree50c8d6f5a5ed8d5f08804b7f3d2b9c0281e5a594 /drivers/pci/controller/dwc
parent1b929c02afd37871d5afb9d498426f83432e71c2 (diff)
downloadlinux-da87d35a6e51480703d6f055e7a1b52c85731d7e.tar.xz
PCI: dra7xx: Use threaded IRQ handler for "dra7xx-pcie-main" IRQ
The "dra7xx-pcie-main" hard IRQ handler is just printing the IRQ status and calling the dw_pcie_ep_linkup() API if LINK_UP status is set. But the execution of dw_pcie_ep_linkup() depends on the EPF driver and may take more time depending on the EPF implementation. In general, hard IRQ handlers are supposed to return quickly and not block for so long. Moreover, there is no real need of the current IRQ handler to be a hard IRQ handler. So switch to the threaded IRQ handler for the "dra7xx-pcie-main" IRQ. Link: https://lore.kernel.org/linux-pci/20230124071158.5503-2-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/pci/controller/dwc')
-rw-r--r--drivers/pci/controller/dwc/pci-dra7xx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 38462ed11d07..4ae807e7cf79 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -840,7 +840,7 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)
}
dra7xx->mode = mode;
- ret = devm_request_irq(dev, irq, dra7xx_pcie_irq_handler,
+ ret = devm_request_threaded_irq(dev, irq, NULL, dra7xx_pcie_irq_handler,
IRQF_SHARED, "dra7xx-pcie-main", dra7xx);
if (ret) {
dev_err(dev, "failed to request irq\n");