Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
pata_cmd640: implement sff_irq_check() method
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
authored by Sergei Shtylyov and committed by Jeff Garzik c1ce90f2 4bb969db
+12
drivers/ata/pata_cmd640.c
+12
drivers/ata/pata_cmd640.c
···
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return 0;
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}
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+
static bool cmd640_sff_irq_check(struct ata_port *ap)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int irq_reg = ap->port_no ? ARTIM23 : CFR;
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u8 irq_stat, irq_mask = ap->port_no ? 0x10 : 0x04;
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+
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pci_read_config_byte(pdev, irq_reg, &irq_stat);
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return irq_stat & irq_mask;
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}
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+
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static struct scsi_host_template cmd640_sht = {
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ATA_PIO_SHT(DRV_NAME),
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};
···
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.inherits = &ata_sff_port_ops,
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/* In theory xfer_noirq is not needed once we kill the prefetcher */
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.sff_data_xfer = ata_sff_data_xfer_noirq,
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.sff_irq_check = cmd640_sff_irq_check,
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.qc_issue = cmd640_qc_issue,
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.cable_detect = ata_cable_40wire,
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.set_piomode = cmd640_set_piomode,