From: Qian Cai <cai@lca.pw>
To: hch@lst.de
Cc: m.szyprowski@samsung.com, robin.murphy@arm.com,
vladimir.murzin@arm.com, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, Qian Cai <cai@lca.pw>
Subject: [PATCH] dma/coherent: remove unused dma_get_device_base()
Date: Tue, 17 Sep 2019 09:00:42 -0400 [thread overview]
Message-ID: <1568725242-2433-1-git-send-email-cai@lca.pw> (raw)
dma_get_device_base() was first introduced in the commit c41f9ea998f3
("drivers: dma-coherent: Account dma_pfn_offset when used with device
tree"). Later, it was removed by the commit 43fc509c3efb ("dma-coherent:
introduce interface for default DMA pool")
Found by the -Wunused-function compilation warning.
Signed-off-by: Qian Cai <cai@lca.pw>
---
kernel/dma/coherent.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c
index 29fd6590dc1e..909b38e1c29b 100644
--- a/kernel/dma/coherent.c
+++ b/kernel/dma/coherent.c
@@ -28,15 +28,6 @@ static inline struct dma_coherent_mem *dev_get_coherent_memory(struct device *de
return NULL;
}
-static inline dma_addr_t dma_get_device_base(struct device *dev,
- struct dma_coherent_mem * mem)
-{
- if (mem->use_dev_dma_pfn_offset)
- return (mem->pfn_base - dev->dma_pfn_offset) << PAGE_SHIFT;
- else
- return mem->device_base;
-}
-
static int dma_init_coherent_memory(phys_addr_t phys_addr,
dma_addr_t device_addr, size_t size,
struct dma_coherent_mem **mem)
--
1.8.3.1
next reply other threads:[~2019-09-17 13:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 13:00 Qian Cai [this message]
2019-09-25 20:54 ` [PATCH] dma/coherent: remove unused dma_get_device_base() Qian Cai
2019-10-01 6:43 ` Christoph Hellwig
2019-10-30 18:13 ` Christoph Hellwig
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