svn commit: r304412 - stable/11/sys/dev/ahci

[Alexander Motin]

Author: mav
Date: Thu Aug 18 11:15:35 2016
New Revision: 304412
URL: https://svnweb.freebsd.org/changeset/base/304412

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/11/sys/dev/ahci/ahci.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/dev/ahci/ahci.c
==============================================================================
--- stable/11/sys/dev/ahci/ahci.c	Thu Aug 18 11:14:57 2016	(r304411)
+++ stable/11/sys/dev/ahci/ahci.c	Thu Aug 18 11:15:35 2016	(r304412)
@@ -466,6 +466,7 @@ 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)