Commit df3b7668 authored by Mark Haverkamp's avatar Mark Haverkamp Committed by James Bottomley
Browse files

[SCSI] aacraid: sa race condition fix 



Received From Mark Salyzyn

A race condition existed that could result in a lost completion of a
command to the ppc based cards.

Signed-off-by: default avatarMark Haverkamp <markh@osdl.org>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 404d9a90

drivers/scsi/aacraid/sa.c

+2 −2
Original line number Diff line number Diff line
@@ -66,11 +66,11 @@ static irqreturn_t aac_sa_intr(int irq, void *dev_id, struct pt_regs *regs) 
			sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */

			sa_writew(dev, DoorbellReg_s, PrintfDone);

		} else if (intstat & DOORBELL_1) {	// dev -> Host Normal Command Ready

			aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);

			sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);

			aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);

		} else if (intstat & DOORBELL_2) {	// dev -> Host Normal Response Ready

			aac_response_normal(&dev->queues->queue[HostNormRespQueue]);

			sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);

			aac_response_normal(&dev->queues->queue[HostNormRespQueue]);

		} else if (intstat & DOORBELL_3) {	// dev -> Host Normal Command Not Full

			sa_writew(dev, DoorbellClrReg_p, DOORBELL_3);

		} else if (intstat & DOORBELL_4) {	// dev -> Host Normal Response Not Full

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