svn commit: r304414 - stable/10/sys/dev/ahci

[Alexander Motin]

Author: mav
Date: Thu Aug 18 11:17:36 2016
New Revision: 304414
URL: https://svnweb.freebsd.org/changeset/base/304414

Log:
  MFC r302947: In AHCI_IRQ_MODE_AFTER mode do not clear interrupts below.
  
  This is probably a NOP change since IS register is not activery used for
  interrupts below the shared, but it looked odd to clear interrupts we did
  not handle.

Modified:
  stable/10/sys/dev/ahci/ahci.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/ahci/ahci.c
==============================================================================
--- stable/10/sys/dev/ahci/ahci.c	Thu Aug 18 11:17:01 2016	(r304413)
+++ stable/10/sys/dev/ahci/ahci.c	Thu Aug 18 11:17:36 2016	(r304414)
@@ -423,6 +423,7 @@ ahci_intr(void *data)
 	} else {	/* AHCI_IRQ_MODE_AFTER */
 		unit = irq->r_irq_rid - 1;
 		is = ATA_INL(ctlr->r_mem, AHCI_IS);
+		is &= (0xffffffff << unit);
 	}
 	/* CCC interrupt is edge triggered. */
 	if (ctlr->ccc)