Commit 565a2c74 authored by Jeff Garzik's avatar Jeff Garzik

Cset exclude: jgarzik@redhat.com|ChangeSet|20040213172720|60184

parent 3e5b8391
...@@ -2385,41 +2385,6 @@ static inline unsigned int ata_host_intr (struct ata_port *ap, ...@@ -2385,41 +2385,6 @@ static inline unsigned int ata_host_intr (struct ata_port *ap,
return handled; return handled;
} }
/**
* ata_chk_spurious_int - Check for spurious interrupts
* @ap: port to which command is being issued
*
* Examines the DMA status registers and clears
* unexpected interrupts. Created to work around
* hardware bug on Intel ICH5, but is applied to all
* chipsets using the standard irq handler, just for safety.
* If the bug is not present, this is simply a single
* PIO or MMIO read addition to the irq handler.
*
* LOCKING:
*/
static inline void ata_chk_spurious_int(struct ata_port *ap) {
int host_stat;
if (ap->flags & ATA_FLAG_MMIO) {
void *mmio = (void *) ap->ioaddr.bmdma_addr;
host_stat = readb(mmio + ATA_DMA_STATUS);
} else
host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
if ((host_stat & (ATA_DMA_INTR | ATA_DMA_ERR | ATA_DMA_ACTIVE)) == ATA_DMA_INTR) {
if (ap->flags & ATA_FLAG_MMIO) {
void *mmio = (void *) ap->ioaddr.bmdma_addr;
writeb(host_stat & ~ATA_DMA_ERR, mmio + ATA_DMA_STATUS);
} else
outb(host_stat & ~ATA_DMA_ERR, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
DPRINTK("ata%u: Caught spurious interrupt, status 0x%X\n", ap->id, host_stat);
udelay(1);
}
}
/** /**
* ata_interrupt - * ata_interrupt -
* @irq: * @irq:
...@@ -2452,7 +2417,6 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs) ...@@ -2452,7 +2417,6 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
qc = ata_qc_from_tag(ap, ap->active_tag); qc = ata_qc_from_tag(ap, ap->active_tag);
if (qc && ((qc->flags & ATA_QCFLAG_POLL) == 0)) if (qc && ((qc->flags & ATA_QCFLAG_POLL) == 0))
handled += ata_host_intr(ap, qc); handled += ata_host_intr(ap, qc);
ata_chk_spurious_int(ap);
} }
} }
......
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