lkml.org 
[lkml]   [2018]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 2/3] dma-mapping: clear dma_ops pointer also on ARM
Date
The generic fallback of arch_teardown_dma_ops() clears the dma_ops
pointer but the ARM specific version does not. Rename the generic one,
so it can be called from ARM specific one, too. This will ensure
consistent behaviour.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
arch/arm/mm/dma-mapping.c | 6 +++---
include/linux/dma-mapping.h | 5 +++--
2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index e3b04786838f..466b0242e8af 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2396,8 +2396,8 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,

void arch_teardown_dma_ops(struct device *dev)
{
- if (!dev->archdata.dma_ops_setup)
- return;
+ if (dev->archdata.dma_ops_setup)
+ arm_teardown_iommu_dma_ops(dev);

- arm_teardown_iommu_dma_ops(dev);
+ generic_teardown_dma_ops(dev);
}
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index eafd6f318e78..020512cb7f0e 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -663,11 +663,12 @@ static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
bool coherent) { }
#endif

-#ifndef arch_teardown_dma_ops
-static inline void arch_teardown_dma_ops(struct device *dev)
+static inline void generic_teardown_dma_ops(struct device *dev)
{
dev->dma_ops = NULL;
}
+#ifndef arch_teardown_dma_ops
+#define arch_teardown_dma_ops generic_teardown_dma_ops
#endif

static inline unsigned int dma_get_max_seg_size(struct device *dev)
--
2.18.0
\
 
 \ /
  Last update: 2018-09-13 17:18    [W:0.099 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site