linux-kernel - [PATCH] dma-mapping: mark dma_alloc_need_uncached as __always

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Message-Id: <20190708195733.26501-1-hch@lst.de>
Date:   Mon,  8 Jul 2019 12:57:33 -0700
From:   Christoph Hellwig <hch@....de>
To:     rdunlap@...radead.org
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dma-mapping: mark dma_alloc_need_uncached as __always_inline

Without the __always_inline at least i386 configs that have
CONFIG_OPTIMIZE_INLINING set seem fail to inline
dma_alloc_need_uncached, leading to a linker error because of
undefined symbols.

Reported-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Christoph Hellwig <hch@....de>
---
 include/linux/dma-noncoherent.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/dma-noncoherent.h b/include/linux/dma-noncoherent.h
index 53ee36ecdf37..3813211a9aad 100644
--- a/include/linux/dma-noncoherent.h
+++ b/include/linux/dma-noncoherent.h
@@ -23,7 +23,7 @@ static inline bool dev_is_dma_coherent(struct device *dev)
 /*
  * Check if an allocation needs to be marked uncached to be coherent.
  */
-static inline bool dma_alloc_need_uncached(struct device *dev,
+static __always_inline bool dma_alloc_need_uncached(struct device *dev,
 		unsigned long attrs)
 {
 	if (dev_is_dma_coherent(dev))
-- 
2.20.1