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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-02-06 10:47:45 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-04-11 19:52:40 +0530 |
| commit | 52126d4c03798cc55aa927fea4c776ab26b5a5f0 (patch) | |
| tree | c438badcf0ee9f80478bf7963db70f14d7c8d197 /include/linux/dmaengine.h | |
| parent | 2d7991fe867974a8e5065ee9691451a406b9320d (diff) | |
| download | lwn-52126d4c03798cc55aa927fea4c776ab26b5a5f0.tar.gz lwn-52126d4c03798cc55aa927fea4c776ab26b5a5f0.zip | |
dmaengine: Remove a useless mutex
According to lib/idr.c,
The IDA handles its own locking. It is safe to call any of the IDA
functions without synchronisation in your code.
so the 'chan_mutex' mutex can just be removed.
It is here only to protect some ida_alloc()/ida_free() calls.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/7180452c1d77b039e27b6f9418e0e7d9dd33c431.1644140845.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 842d4f7ca752..6db9e03afd0b 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -870,7 +870,6 @@ struct dma_device { struct device *dev; struct module *owner; struct ida chan_ida; - struct mutex chan_mutex; /* to protect chan_ida */ u32 src_addr_widths; u32 dst_addr_widths; |