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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2010-10-08 18:56:39 +0400
committerJeff Garzik <jgarzik@redhat.com>2010-10-21 20:21:05 -0400
commitc1ce90f25c52201469c71a2a91e2d9b27c3082f2 (patch)
tree67cfa4a2c2b216e877581bb0148005f9026cd88d /drivers/ata/pata_cmd640.c
parent4bb969db48dd507e5313dafa285215cb1c36704a (diff)
downloadblackbird-op-linux-c1ce90f25c52201469c71a2a91e2d9b27c3082f2.tar.gz
blackbird-op-linux-c1ce90f25c52201469c71a2a91e2d9b27c3082f2.zip
pata_cmd640: implement sff_irq_check() method
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/pata_cmd640.c')
-rw-r--r--drivers/ata/pata_cmd640.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/ata/pata_cmd640.c b/drivers/ata/pata_cmd640.c
index e5f289f59ca3..549d28dbf90d 100644
--- a/drivers/ata/pata_cmd640.c
+++ b/drivers/ata/pata_cmd640.c
@@ -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,
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