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authorJeff Garzik <jgarzik@pobox.com>2005-10-05 02:58:32 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-10-05 02:58:32 -0400
commit67846b30171cc4d706125f630193a76a26bb334a (patch)
tree5ba70c2b68086f471686eb1e56e38436eaf73416 /drivers/scsi/ahci.c
parent643736a58d2668af94aee05670c5e9ae76e7b85f (diff)
downloadblackbird-op-linux-67846b30171cc4d706125f630193a76a26bb334a.tar.gz
blackbird-op-linux-67846b30171cc4d706125f630193a76a26bb334a.zip
libata: add ata_ratelimit(), use it in AHCI driver irq handler
Diffstat (limited to 'drivers/scsi/ahci.c')
-rw-r--r--drivers/scsi/ahci.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index c2c8fa828e24..5ec866b00479 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -672,17 +672,36 @@ static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *
for (i = 0; i < host_set->n_ports; i++) {
struct ata_port *ap;
- u32 tmp;
- VPRINTK("port %u\n", i);
+ if (!(irq_stat & (1 << i)))
+ continue;
+
ap = host_set->ports[i];
- tmp = irq_stat & (1 << i);
- if (tmp && ap) {
+ if (ap) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);
- if (ahci_host_intr(ap, qc))
- irq_ack |= (1 << i);
+ if (!ahci_host_intr(ap, qc))
+ if (ata_ratelimit()) {
+ struct pci_dev *pdev =
+ to_pci_dev(ap->host_set->dev);
+ printk(KERN_WARNING
+ "ahci(%s): unhandled interrupt on port %u\n",
+ pci_name(pdev), i);
+ }
+
+ VPRINTK("port %u\n", i);
+ } else {
+ VPRINTK("port %u (no irq)\n", i);
+ if (ata_ratelimit()) {
+ struct pci_dev *pdev =
+ to_pci_dev(ap->host_set->dev);
+ printk(KERN_WARNING
+ "ahci(%s): interrupt on disabled port %u\n",
+ pci_name(pdev), i);
+ }
}
+
+ irq_ack |= (1 << i);
}
if (irq_ack) {
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