NTB: Enable link up and down event notification (8a7cedef) · Commits · 戴 / test

Link-Up and Link-Down events can occur irrespective of whether a data transfer is in progress or not. So we need to enable the interrupt delivery for these events early during driver load. Signed-off-by:

Arindam Nath <arindam.nath@amd.com> Signed-off-by:

Jon Mason <jdmason@kudzu.us>

drivers/ntb/hw/amd/ntb_hw_amd.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -994,6 +994,7 @@ static enum ntb_topo amd_get_topo(struct amd_ntb_dev *ndev)

		static int amd_init_dev(struct amd_ntb_dev *ndev)
		{
		void __iomem *mmio = ndev->self_mmio;
		struct pci_dev *pdev;
		int rc = 0;

		@@ -1015,6 +1016,10 @@ static int amd_init_dev(struct amd_ntb_dev *ndev)

		ndev->db_valid_mask = BIT_ULL(ndev->db_count) - 1;

		/* Enable Link-Up and Link-Down event interrupts */
		ndev->int_mask &= ~(AMD_LINK_UP_EVENT \| AMD_LINK_DOWN_EVENT);
		writel(ndev->int_mask, mmio + AMD_INTMASK_OFFSET);

		return 0;
		}

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