linux-kernel - [PATCH 3.4 040/172] fixed invalid assignment of 64bit mask to host dma_boundary for scatter gather segment boundary limit.

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Date:	Tue, 16 Jun 2015 16:34:54 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Minh Duc Tran <MinhDuc.Tran@...lex.Com>,
	Minh Tran <minh.tran@...lex.com>,
	James Bottomley <JBottomley@...allels.com>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 040/172] fixed invalid assignment of 64bit mask to host dma_boundary for scatter gather segment boundary limit.

From: Minh Duc Tran <MinhDuc.Tran@...lex.Com>

3.4.108-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit f76a610a8b4b6280eaedf48f3af9d5d74e418b66 upstream.

In reference to bug https://bugzilla.redhat.com/show_bug.cgi?id=1097141
Assert is seen with AMD cpu whenever calling pci_alloc_consistent.

[   29.406183] ------------[ cut here ]------------
[   29.410505] kernel BUG at lib/iommu-helper.c:13!

Signed-off-by: Minh Tran <minh.tran@...lex.com>
Fixes: 6733b39a1301b0b020bbcbf3295852e93e624cb1
Signed-off-by: James Bottomley <JBottomley@...allels.com>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 drivers/scsi/be2iscsi/be_main.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 375756f..e88da8d 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -424,7 +424,6 @@ static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
 			"iscsi_host_alloc failed\n");
 		return NULL;
 	}
-	shost->dma_boundary = pcidev->dma_mask;
 	shost->max_id = BE2_MAX_SESSIONS;
 	shost->max_channel = 0;
 	shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
-- 
1.9.1

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