Merge bk://gkernel.bkbits.net/libata-2.5

into home.osdl.org:/home/torvalds/v2.5/linux

drivers/scsi/libata-core.c

@@ -2385,41 +2385,6 @@ static inline unsigned int ata_host_intr (struct ata_port *ap,
 	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 -
  *	@irq:
@@ -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);
 			if (qc && ((qc->flags & ATA_QCFLAG_POLL) == 0))
 				handled += ata_host_intr(ap, qc);
-			ata_chk_spurious_int(ap);
 		}
 	}