[PATCH v3 02/11] dmaengine: dw: provide probe(), remove() stubs for users

From	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Newsgroups	linux.kernel
Subject	[PATCH v3 02/11] dmaengine: dw: provide probe(), remove() stubs for users
Date	2016-04-27 15:50 +0200
Message-ID	<rsy0P-22y-25@gated-at.bofh.it> (permalink)
References	<rsy0O-22y-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Some users consider DMA optional, thus when driver is not compiled we shouldn't
prevent compilation of the users. Add stubs for dw_dma_probe() and
dw_dma_remove().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 include/linux/dma/dw.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/dma/dw.h b/include/linux/dma/dw.h
index f2e538a..ccfd0c3 100644
--- a/include/linux/dma/dw.h
+++ b/include/linux/dma/dw.h
@@ -40,8 +40,13 @@ struct dw_dma_chip {
 };
 
 /* Export to the platform drivers */
+#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
 int dw_dma_probe(struct dw_dma_chip *chip);
 int dw_dma_remove(struct dw_dma_chip *chip);
+#else
+static inline int dw_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; }
+static inline int dw_dma_remove(struct dw_dma_chip *chip) { return 0; }
+#endif /* CONFIG_DW_DMAC_CORE */
 
 /* DMA API extensions */
 struct dw_desc;
-- 
2.8.0.rc3

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[PATCH v3 02/11] dmaengine: dw: provide probe(), remove() stubs for users Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-04-27 15:50 +0200

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