From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] dma-direct: respect DMA_ATTR_NO_WARN
Date: Mon, 1 Oct 2018 13:12:57 -0700 [thread overview]
Message-ID: <20181001201257.366-3-hch@lst.de> (raw)
In-Reply-To: <20181001201257.366-1-hch@lst.de>
Respect the DMA_ATTR_NO_WARN flags for allocations in dma-direct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
kernel/dma/direct.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 170bd322a94a..ba6f5956a291 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -107,6 +107,9 @@ void *dma_direct_alloc_pages(struct device *dev, size_t size,
u64 phys_mask;
void *ret;
+ if (attrs & DMA_ATTR_NO_WARN)
+ gfp |= __GFP_NOWARN;
+
/* we always manually zero the memory once we are done: */
gfp &= ~__GFP_ZERO;
gfp |= __dma_direct_optimal_gfp_mask(dev, dev->coherent_dma_mask,
--
2.19.0
next prev parent reply other threads:[~2018-10-01 20:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-01 20:12 fix up nowarn confusion in the dma mapping layer Christoph Hellwig
2018-10-01 20:12 ` [PATCH 1/2] dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN Christoph Hellwig
2018-10-01 20:12 ` Christoph Hellwig [this message]
2018-10-08 7:03 ` fix up nowarn confusion in the dma mapping layer Christoph Hellwig
2018-10-09 12:55 ` Robin Murphy
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