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From: dfilter@FreeBSD.ORG (dfilter service)
Subject: Re: kern/175002: commit references a PR
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The following reply was made to PR kern/175002; it has been noted by GNATS.

From: dfilter@FreeBSD.ORG (dfilter service)
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: kern/175002: commit references a PR
Date: Thu, 24 Jan 2013 09:34:02 +0000 (UTC)

 Author: mav
 Date: Thu Jan 24 09:33:43 2013
 New Revision: 245875
 URL: http://svnweb.freebsd.org/changeset/base/245875
 
 Log:
   Disable MSI interrupts for SB600 chipset.  According to the report they are
   not functional.
   
   PR:		kern/174880, kern/174985, kern/175002
   MFC after:	1 week
 
 Modified:
   head/sys/dev/ahci/ahci.c
 
 Modified: head/sys/dev/ahci/ahci.c
 ==============================================================================
 --- head/sys/dev/ahci/ahci.c	Thu Jan 24 09:30:42 2013	(r245874)
 +++ head/sys/dev/ahci/ahci.c	Thu Jan 24 09:33:43 2013	(r245875)
 @@ -114,8 +114,9 @@ static struct {
  #define AHCI_Q_NOAA	512
  #define AHCI_Q_NOCOUNT	1024
  #define AHCI_Q_ALTSIG	2048
 +#define AHCI_Q_NOMSI	4096
  } ahci_ids[] = {
 -	{0x43801002, 0x00, "ATI IXP600",	0},
 +	{0x43801002, 0x00, "ATI IXP600",	AHCI_Q_NOMSI},
  	{0x43901002, 0x00, "ATI IXP700",	0},
  	{0x43911002, 0x00, "ATI IXP700",	0},
  	{0x43921002, 0x00, "ATI IXP700",	0},
 @@ -634,6 +635,8 @@ ahci_setup_interrupt(device_t dev)
  	int i, msi = 1;
  
  	/* Process hints. */
 +	if (ctlr->quirks & AHCI_Q_NOMSI)
 +		msi = 0;
  	resource_int_value(device_get_name(dev),
  	    device_get_unit(dev), "msi", &msi);
  	if (msi < 0)
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