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| author |   David S. Miller <davem@davemloft.net> | 2009-02-06 22:06:43 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-06 22:06:43 -0800 |
| commit | b4bd07c20ba0c1fa7ad09ba257e0a5cfc2bf6bb3 (patch) | |
| tree | 41fb5a2fe732a0e4f3da00e31b55418ff988932f | |
| parent | 3c509: Fix resume from hibernation for PnP mode. (diff) | |
| download | linux-dev-b4bd07c20ba0c1fa7ad09ba257e0a5cfc2bf6bb3.tar.xz linux-dev-b4bd07c20ba0c1fa7ad09ba257e0a5cfc2bf6bb3.zip | |
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.h | 12 | ||||
| -rw-r--r-- | net/core/dev.c | 4 |
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; } |