pata_cmd640: implement sff_irq_check() method (c1ce90f2) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/ata/pata_cmd640.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -161,6 +161,17 @@ static int cmd640_port_start(struct ata_port *ap)
		return 0;
		}

		static bool cmd640_sff_irq_check(struct ata_port *ap)
		{
		struct pci_dev *pdev = to_pci_dev(ap->host->dev);
		int irq_reg = ap->port_no ? ARTIM23 : CFR;
		u8 irq_stat, irq_mask = ap->port_no ? 0x10 : 0x04;

		pci_read_config_byte(pdev, irq_reg, &irq_stat);

		return irq_stat & irq_mask;
		}

		static struct scsi_host_template cmd640_sht = {
		ATA_PIO_SHT(DRV_NAME),
		};
		@@ -169,6 +180,7 @@ static struct ata_port_operations cmd640_port_ops = {
		.inherits = &ata_sff_port_ops,
		/* In theory xfer_noirq is not needed once we kill the prefetcher */
		.sff_data_xfer = ata_sff_data_xfer_noirq,
		.sff_irq_check = cmd640_sff_irq_check,
		.qc_issue = cmd640_qc_issue,
		.cable_detect = ata_cable_40wire,
		.set_piomode = cmd640_set_piomode,