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Commit f1d39b29 authored by Unicorn Chang's avatar Unicorn Chang Committed by Jeff Garzik
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[PATCH] ahci: skip protocol test altogether in spurious interrupt code 



Skip protocol test altogether in spurious interrupt code. If PIOS is received
when it shouldn't, ahci will raise protocol violation.

Signed-off-by: default avatarUnicorn Chang <uchang@tw.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent fd60ae40

drivers/scsi/ahci.c

+2 −8
Original line number Diff line number Diff line
@@ -940,14 +940,8 @@ static void ahci_host_intr(struct ata_port *ap) 
		return;



	/* ignore interim PIO setup fis interrupts */

	if (ata_tag_valid(ap->active_tag)) {

		struct ata_queued_cmd *qc =

			ata_qc_from_tag(ap, ap->active_tag);



		if (qc && qc->tf.protocol == ATA_PROT_PIO &&

		    (status & PORT_IRQ_PIOS_FIS))

	if (ata_tag_valid(ap->active_tag) && (status & PORT_IRQ_PIOS_FIS)) 

		return;

	}



	if (ata_ratelimit())

		ata_port_printk(ap, KERN_INFO, "spurious interrupt "