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dmaengine: use DEFINE_IDR for static initialization

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We could use DEFINE_IDR for statically allocated idr
that allow us to save a few lines of code.

And also remove unneeded mutex_init() for dma_list_mutex, as
dma_list_mutex is initialized automatically by DEFINE_MUTEX().

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Axel Lin 2011-07-20 11:32:28 +08:00 committed by Dan Williams
parent d0b0c8c79b
commit 21ef4b8b7a
1 changed files with 1 additions and 3 deletions
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4
drivers/dma/dmaengine.c
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@ -61,9 +61,9 @@
#include <linux/slab.h>
static DEFINE_MUTEX(dma_list_mutex);
static DEFINE_IDR(dma_idr);
static LIST_HEAD(dma_device_list);
static long dmaengine_ref_count;
static struct idr dma_idr;
/* --- sysfs implementation --- */
@ -1049,8 +1049,6 @@ EXPORT_SYMBOL_GPL(dma_run_dependencies);
static int __init dma_bus_init(void)
{
idr_init(&dma_idr);
mutex_init(&dma_list_mutex);
return class_register(&dma_devclass);
}
arch_initcall(dma_bus_init);