linux-kernel - [PATCH 3.16 007/305] iommu/vt-d: Improve fault handler error messages

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Message-ID: <lsq.1471110171.886002382@decadent.org.uk>
Date:	Sat, 13 Aug 2016 18:42:51 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Alex Williamson" <alex.williamson@...hat.com>,
	"Joerg Roedel" <jroedel@...e.de>, "Joe Perches" <joe@...ches.com>
Subject: [PATCH 3.16 007/305] iommu/vt-d: Improve fault handler error messages

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

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

From: Alex Williamson <alex.williamson@...hat.com>

commit a0fe14d7dcf5db2f101b4fe8689ecabb255ab7d3 upstream.

Remove new line in error logs, avoid duplicate and explicit pr_fmt.

Suggested-by: Joe Perches <joe@...ches.com>
Signed-off-by: Alex Williamson <alex.williamson@...hat.com>
Fixes: 0ac2491f57af ('x86, dmar: move page fault handling code to dmar.c')
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/iommu/dmar.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1459,18 +1459,14 @@ static int dmar_fault_do_one(struct inte
 	reason = dmar_get_fault_reason(fault_reason, &fault_type);
 
 	if (fault_type == INTR_REMAP)
-		pr_err("INTR-REMAP: Request device [[%02x:%02x.%d] "
-		       "fault index %llx\n"
-			"INTR-REMAP:[fault reason %02d] %s\n",
-			(source_id >> 8), PCI_SLOT(source_id & 0xFF),
+		pr_err("[INTR-REMAP] Request device [%02x:%02x.%d] fault index %llx [fault reason %02d] %s\n",
+			source_id >> 8, PCI_SLOT(source_id & 0xFF),
 			PCI_FUNC(source_id & 0xFF), addr >> 48,
 			fault_reason, reason);
 	else
-		pr_err("DMAR:[%s] Request device [%02x:%02x.%d] "
-		       "fault addr %llx \n"
-		       "DMAR:[fault reason %02d] %s\n",
-		       (type ? "DMA Read" : "DMA Write"),
-		       (source_id >> 8), PCI_SLOT(source_id & 0xFF),
+		pr_err("[%s] Request device [%02x:%02x.%d] fault addr %llx [fault reason %02d] %s\n",
+		       type ? "DMA Read" : "DMA Write",
+		       source_id >> 8, PCI_SLOT(source_id & 0xFF),
 		       PCI_FUNC(source_id & 0xFF), addr, fault_reason, reason);
 	return 0;
 }