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From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: stable@kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2.6.22.y] ieee1394: revert "sbp2: enforce 32bit DMA mapping"
Date: Sat, 4 Aug 2007 18:39:34 +0200 (CEST)	[thread overview]
Message-ID: <tkrat.f06cfd50476dd0f7@s5r6.in-berlin.de> (raw)

Date: Wed, 1 Aug 2007 20:30:36 +0200 (CEST)
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Subject: ieee1394: revert "sbp2: enforce 32bit DMA mapping"

Revert commit 0555659d63c285ceb7ead3115532e1b71b0f27a7 from 2.6.22-rc1.
The dma_set_mask call somehow failed on a PowerMac G5, PPC64:
http://lkml.org/lkml/2007/8/1/344

Should there ever occur a DMA mapping beyond the physical DMA range, a
proper SBP-2 firmware will report transport errors.  So let's leave it
at that.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Olaf Hering <olh@suse.de>
---
Same as commit a9c2f18800753c82c45fc13b27bdc148849bdbb2.

 drivers/ieee1394/sbp2.c |    5 -----
 1 file changed, 5 deletions(-)

Index: linux-2.6.22/drivers/ieee1394/sbp2.c
===================================================================
--- linux-2.6.22.orig/drivers/ieee1394/sbp2.c
+++ linux-2.6.22/drivers/ieee1394/sbp2.c
@@ -774,11 +774,6 @@ static struct sbp2_lu *sbp2_alloc_device
 			SBP2_ERR("failed to register lower 4GB address range");
 			goto failed_alloc;
 		}
-#else
-		if (dma_set_mask(hi->host->device.parent, DMA_32BIT_MASK)) {
-			SBP2_ERR("failed to set 4GB DMA mask");
-			goto failed_alloc;
-		}
 #endif
 	}
 

-- 
Stefan Richter
-=====-=-=== =--- --=--
http://arcgraph.de/sr/


             reply	other threads:[~2007-08-04 16:40 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-04 16:39 Stefan Richter [this message]
     [not found] <fa.Qn3Snqoik3hhnxcA6HqjGV0Yzck@ifi.uio.no>
2007-08-04 17:14 ` Robert Hancock
2007-08-04 17:30   ` Stefan Richter
2007-08-05  0:15     ` Benjamin Herrenschmidt
2007-08-05  7:54       ` Stefan Richter
2007-08-05 22:04         ` Benjamin Herrenschmidt
2007-08-06 13:51           ` Olaf Hering
2007-08-06 21:47             ` Benjamin Herrenschmidt
2007-08-06 22:22               ` Stefan Richter
2007-08-06 22:25                 ` Robert Hancock
2007-08-06 22:32                   ` Benjamin Herrenschmidt
2007-08-06 22:35                     ` Robert Hancock
2007-08-06 22:59                       ` Stefan Richter
2007-08-06 22:48                   ` Stefan Richter
2007-08-07  2:18                     ` Andi Kleen
2007-08-06 22:29                 ` Benjamin Herrenschmidt
2007-08-06 11:58         ` Olaf Hering
2007-08-06 21:43           ` Benjamin Herrenschmidt

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