From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Viresh Kumar <vireshk@kernel.org>,
Vinod Koul <vinod.koul@intel.com>,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>,
Vineet Gupta <vgupta@synopsys.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v4 2/4] dmaengine: dw: provide probe(), remove() stubs for users
Date: Thu, 21 Apr 2016 18:03:12 +0300 [thread overview]
Message-ID: <1461250994-62090-3-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1461250994-62090-1-git-send-email-andriy.shevchenko@linux.intel.com>
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
next prev parent reply other threads:[~2016-04-21 15:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-21 15:03 [PATCH v4 0/4] Fixes / cleanups in dw_dmac (affects on few subsystems) Andy Shevchenko
2016-04-21 15:03 ` [PATCH v4 1/4] dmaengine: dw: keep copy of custom slave config in dwc Andy Shevchenko
2016-04-21 15:03 ` Andy Shevchenko [this message]
2016-04-21 15:03 ` [PATCH v4 3/4] dmaengine: dw: set polarity of handshake interface Andy Shevchenko
2016-04-21 15:03 ` [PATCH v4 4/4] dmaengine: dw: override LLP support if asked in platform data Andy Shevchenko
2016-04-21 15:06 ` [PATCH v4 0/4] Fixes / cleanups in dw_dmac (affects on few subsystems) Andy Shevchenko
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