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Commit 8e069da2 authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branch 'pci/dpc' 

  - clear interrupt status in top half to avoid interrupt storm (Oza
    Pawandeep)

* pci/dpc:
  PCI/DPC: Clear interrupt status in interrupt handler top half
parents 08b5b2f7 56abbf8a

drivers/pci/pcie/dpc.c

+4 −1
Original line number Diff line number Diff line
@@ -104,7 +104,7 @@ static pci_ers_result_t dpc_reset_link(struct pci_dev *pdev) 
	}



	pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS,

		PCI_EXP_DPC_STATUS_TRIGGER | PCI_EXP_DPC_STATUS_INTERRUPT);

			      PCI_EXP_DPC_STATUS_TRIGGER);



	pci_read_config_word(pdev, cap + PCI_EXP_DPC_CTL, &ctl);

	pci_write_config_word(pdev, cap + PCI_EXP_DPC_CTL,
@@ -225,6 +225,9 @@ static irqreturn_t dpc_irq(int irq, void *context) 
	if (dpc->rp_extensions && reason == 3 && ext_reason == 0)

		dpc_process_rp_pio_error(dpc);



	pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS,

			      PCI_EXP_DPC_STATUS_INTERRUPT);



	schedule_work(&dpc->work);



	return IRQ_HANDLED;