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authorDavid S. Miller <davem@davemloft.net>2009-02-06 22:06:43 -0800
committerDavid S. Miller <davem@davemloft.net>2009-02-06 22:06:43 -0800
commitb4bd07c20ba0c1fa7ad09ba257e0a5cfc2bf6bb3 (patch)
tree41fb5a2fe732a0e4f3da00e31b55418ff988932f
parent152abd139cca049c9b559a7cca762fa7fd9fd264 (diff)
net_dma: call dmaengine_get only if NET_DMA enabled
Based upon a patch from Atsushi Nemoto <anemo@mba.ocn.ne.jp> -------------------- The commit 649274d993212e7c23c0cb734572c2311c200872 ("net_dma: acquire/release dma channels on ifup/ifdown") added unconditional call of dmaengine_get() to net_dma. The API should be called only if NET_DMA was enabled. -------------------- Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--include/linux/dmaengine.h12
-rw-r--r--net/core/dev.c4
2 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 3e0f64c335c8..3e68469c1885 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -282,6 +282,18 @@ static inline void dmaengine_put(void)
}
#endif
+#ifdef CONFIG_NET_DMA
+#define net_dmaengine_get() dmaengine_get()
+#define net_dmaengine_put() dmaengine_put()
+#else
+static inline void net_dmaengine_get(void)
+{
+}
+static inline void net_dmaengine_put(void)
+{
+}
+#endif
+
dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan,
void *dest, void *src, size_t len);
dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan,
diff --git a/net/core/dev.c b/net/core/dev.c
index 5379b0c1190a..a17e00662363 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1090,7 +1090,7 @@ int dev_open(struct net_device *dev)
/*
* Enable NET_DMA
*/
- dmaengine_get();
+ net_dmaengine_get();
/*
* Initialize multicasting status
@@ -1172,7 +1172,7 @@ int dev_close(struct net_device *dev)
/*
* Shutdown NET_DMA
*/
- dmaengine_put();
+ net_dmaengine_put();
return 0;
}