linux-kernel - [PATCH -v2 6/7] powerpc: handle SWIOTLB mapping error properly

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1249448908-18985-7-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Date:	Wed,  5 Aug 2009 14:08:27 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	linuxppc-dev@...ts.ozlabs.org, benh@...nel.crashing.org
Cc:	galak@...nel.crashing.orga, beckyb@...nel.crashing.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	fujita.tomonori@....ntt.co.jp
Subject: [PATCH -v2 6/7] powerpc: handle SWIOTLB mapping error properly

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
 arch/powerpc/include/asm/dma-mapping.h |    5 +++++
 arch/powerpc/kernel/dma-swiotlb.c      |    3 ++-
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 91217e4..4bd41b4 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -143,6 +143,11 @@ static inline void dma_free_coherent(struct device *dev, size_t size,
 
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
+	struct dma_map_ops *dma_ops = get_dma_ops(dev);
+
+	if (dma_ops->mapping_error)
+		return dma_ops->mapping_error(dev, dma_addr);
+
 #ifdef CONFIG_PPC64
 	return (dma_addr == DMA_ERROR_CODE);
 #else
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index d1143a6..e96cbbd 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -42,7 +42,8 @@ struct dma_map_ops swiotlb_dma_ops = {
 	.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
 	.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
 	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
-	.sync_sg_for_device = swiotlb_sync_sg_for_device
+	.sync_sg_for_device = swiotlb_sync_sg_for_device,
+	.mapping_error = swiotlb_dma_mapping_error,
 };
 
 void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev)
-- 
1.6.0.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/