linux-kernel - Re: [Bug 10819] Fatal DMA error with b43 driver since 2.6.26

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Date:	Sat, 14 Jun 2008 23:34:22 +0200
From:	Michael Buesch <mb@...sch.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Christian Casteyde" <casteyde.christian@...e.fr>
Subject: Re: [Bug 10819] Fatal DMA error with b43 driver since 2.6.26

On Saturday 14 June 2008 22:12:03 Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10819
> Subject		: Fatal DMA error with b43 driver since 2.6.26
> Submitter	: Christian Casteyde <casteyde.christian@...e.fr>
> Date		: 2008-05-29 13:16 (17 days old)


This regression is fixed by
21691a38db9d465a109c5ec25cd3956a18cfcf5d

Author: Michael Buesch <mb@...sch.de>  2008-06-12 15:33:13
Committer: John W. Linville <linville@...driver.com>  2008-06-14 01:18:58
Parent: 9983f35f12b8be71d13b8aca6dbf781d3342c7aa (rt2x00: LEDS build failure)
Child:  33593dbf334869456167bc66511bc54c4ba39dc5 (mac80211 : fix for iwconfig in ad-hoc mode)
Branches: master, remotes/origin/master
Follows: merge-2008-06-14
Precedes: master-2008-06-14

    ssb: Fix coherent DMA mask for PCI devices
    
    This fixes setting the coherent DMA mask for PCI devices.
    
    Signed-off-by: Michael Buesch <mb@...sch.de>
    Signed-off-by: John W. Linville <linville@...driver.com>

------------------------------ drivers/ssb/main.c ------------------------------
index 7cf8851..d184f2a 100644
@@ -1168,15 +1168,21 @@ EXPORT_SYMBOL(ssb_dma_translation);
 int ssb_dma_set_mask(struct ssb_device *ssb_dev, u64 mask)
 {
 	struct device *dma_dev = ssb_dev->dma_dev;
+	int err = 0;
 
 #ifdef CONFIG_SSB_PCIHOST
-	if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI)
-		return dma_set_mask(dma_dev, mask);
+	if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI) {
+		err = pci_set_dma_mask(ssb_dev->bus->host_pci, mask);
+		if (err)
+			return err;
+		err = pci_set_consistent_dma_mask(ssb_dev->bus->host_pci, mask);
+		return err;
+	}
 #endif
 	dma_dev->coherent_dma_mask = mask;
 	dma_dev->dma_mask = &dma_dev->coherent_dma_mask;
 
-	return 0;
+	return err;
 }
 EXPORT_SYMBOL(ssb_dma_set_mask);
 



-- 
Greetings Michael.
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