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Commit 21ef4b8b authored by Axel Lin's avatar Axel Lin Committed by Dan Williams
Browse files

dmaengine: use DEFINE_IDR for static initialization 



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: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent d0b0c8c7

drivers/dma/dmaengine.c

+1 −3
Original line number Diff line number Diff line
@@ -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);