From: Wolfram Sang <wsa+renesas@sang-engineering.com> To: iommu@lists.linux-foundation.org, Robin Murphy <robin.murphy@arm.com>, Christoph Hellwig <hch@lst.de> Cc: linux-renesas-soc@vger.kernel.org, Marek Szyprowski <m.szyprowski@samsung.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Wolfram Sang <wsa+renesas@sang-engineering.com> Subject: [RFC PATCH 3/3] dma-mapping: clear dma_parms on teardown, too Date: Thu, 13 Sep 2018 17:17:16 +0200 [thread overview] Message-ID: <20180913151716.6333-4-wsa+renesas@sang-engineering.com> (raw) In-Reply-To: <20180913151716.6333-1-wsa+renesas@sang-engineering.com> While sanitizig the pointer for dma_ops on teardown, do the same for dma_parms, too. Rename the function to have a more generic name. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- arch/arm/mm/dma-mapping.c | 2 +- include/linux/dma-mapping.h | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 466b0242e8af..bcf77bc0423f 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -2399,5 +2399,5 @@ void arch_teardown_dma_ops(struct device *dev) if (dev->archdata.dma_ops_setup) arm_teardown_iommu_dma_ops(dev); - generic_teardown_dma_ops(dev); + generic_teardown_dma(dev); } diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 020512cb7f0e..6a2d8779b1d8 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -663,12 +663,13 @@ static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, bool coherent) { } #endif -static inline void generic_teardown_dma_ops(struct device *dev) +static inline void generic_teardown_dma(struct device *dev) { dev->dma_ops = NULL; + dev->dma_parms = NULL; } #ifndef arch_teardown_dma_ops -#define arch_teardown_dma_ops generic_teardown_dma_ops +#define arch_teardown_dma_ops generic_teardown_dma #endif static inline unsigned int dma_get_max_seg_size(struct device *dev) -- 2.18.0
WARNING: multiple messages have this Message-ID (diff)
From: wsa+renesas@sang-engineering.com (Wolfram Sang) To: linux-arm-kernel@lists.infradead.org Subject: [RFC PATCH 3/3] dma-mapping: clear dma_parms on teardown, too Date: Thu, 13 Sep 2018 17:17:16 +0200 [thread overview] Message-ID: <20180913151716.6333-4-wsa+renesas@sang-engineering.com> (raw) In-Reply-To: <20180913151716.6333-1-wsa+renesas@sang-engineering.com> While sanitizig the pointer for dma_ops on teardown, do the same for dma_parms, too. Rename the function to have a more generic name. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- arch/arm/mm/dma-mapping.c | 2 +- include/linux/dma-mapping.h | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 466b0242e8af..bcf77bc0423f 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -2399,5 +2399,5 @@ void arch_teardown_dma_ops(struct device *dev) if (dev->archdata.dma_ops_setup) arm_teardown_iommu_dma_ops(dev); - generic_teardown_dma_ops(dev); + generic_teardown_dma(dev); } diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 020512cb7f0e..6a2d8779b1d8 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -663,12 +663,13 @@ static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, bool coherent) { } #endif -static inline void generic_teardown_dma_ops(struct device *dev) +static inline void generic_teardown_dma(struct device *dev) { dev->dma_ops = NULL; + dev->dma_parms = NULL; } #ifndef arch_teardown_dma_ops -#define arch_teardown_dma_ops generic_teardown_dma_ops +#define arch_teardown_dma_ops generic_teardown_dma #endif static inline unsigned int dma_get_max_seg_size(struct device *dev) -- 2.18.0
next prev parent reply other threads:[~2018-09-13 15:17 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-09-13 15:17 [RFC PATCH 0/3] dma-mapping: clear dangling pointers consistently Wolfram Sang 2018-09-13 15:17 ` Wolfram Sang 2018-09-13 15:17 ` [RFC PATCH 1/3] ARM: dma-mapping: update comment about handling dma_ops when detaching from IOMMU Wolfram Sang 2018-09-13 15:17 ` Wolfram Sang 2018-09-14 12:15 ` Geert Uytterhoeven 2018-09-14 12:15 ` Geert Uytterhoeven 2018-09-14 16:11 ` Wolfram Sang 2018-09-14 16:11 ` Wolfram Sang 2018-09-14 16:11 ` Wolfram Sang 2018-09-13 15:17 ` [RFC PATCH 2/3] dma-mapping: clear dma_ops pointer also on ARM Wolfram Sang 2018-09-13 15:17 ` Wolfram Sang 2018-09-14 13:12 ` Christoph Hellwig 2018-09-14 13:12 ` Christoph Hellwig 2018-09-13 15:17 ` Wolfram Sang [this message] 2018-09-13 15:17 ` [RFC PATCH 3/3] dma-mapping: clear dma_parms on teardown, too Wolfram Sang 2018-09-14 13:12 ` Christoph Hellwig 2018-09-14 13:12 ` Christoph Hellwig 2018-09-14 13:23 ` Robin Murphy 2018-09-14 13:23 ` Robin Murphy 2018-09-14 15:57 ` Wolfram Sang 2018-09-14 15:57 ` Wolfram Sang 2018-09-14 15:57 ` Wolfram Sang
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