Re: hdb: dma_timer_expiry: dma status == 0x64 [2.5.69]

[Maciej Soltysiak]

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> I'm seeing it too, only with recent kernels.
Exactly like me.
Someone suggested Bartlomiej Zolnierkiewicz's patch.
Try this on for size. I haven't tested it yet, but please give it a shot.

Regards,
Maciej

# Fix masked_irq arg handling for ide_do_request().
# Solves "hdx: lost interrupt" bug.
#
# Bartlomiej Zolnierkiewicz <[e-mail]>

--- linux-2.5.68-bk6/drivers/ide/ide-io.c	Fri Apr 25 16:08:53 2003
+++ linux/drivers/ide/ide-io.c	Fri Apr 25 16:13:37 2003
@@ -850,14 +850,14 @@
 		 * happens anyway when any interrupt comes in, IDE or otherwise
 		 *  -- the kernel masks the IRQ while it is being handled.
 		 */
-		if (hwif->irq != masked_irq)
+		if (masked_irq != IDE_NO_IRQ && hwif->irq != masked_irq)
 			disable_irq_nosync(hwif->irq);
 		spin_unlock(&ide_lock);
 		local_irq_enable();
 			/* allow other IRQs while we start this request */
 		startstop = start_request(drive, rq);
 		spin_lock_irq(&ide_lock);
-		if (hwif->irq != masked_irq)
+		if (masked_irq != IDE_NO_IRQ && hwif->irq != masked_irq)
 			enable_irq(hwif->irq);
 		if (startstop == ide_released)
 			goto queue_next;
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