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Commit 4e82f5dd authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
Browse files

dmaengine: call acpi_dma_request_slave_channel as well 



The slave device could be enumerated by ACPI. In that case the
dma_request_slave_channel should use the acpi_dma_request_slave_channel()
helper.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 1b2e98bc

drivers/dma/dmaengine.c

+6 −0
Original line number Diff line number Diff line
@@ -62,6 +62,8 @@ 
#include <linux/rculist.h>

#include <linux/idr.h>

#include <linux/slab.h>

#include <linux/acpi.h>

#include <linux/acpi_dma.h>

#include <linux/of_dma.h>



static DEFINE_MUTEX(dma_list_mutex);
@@ -564,6 +566,10 @@ struct dma_chan *dma_request_slave_channel(struct device *dev, char *name) 
	if (dev->of_node)

		return of_dma_request_slave_channel(dev->of_node, name);



	/* If device was enumerated by ACPI get slave info from here */

	if (ACPI_HANDLE(dev))

		return acpi_dma_request_slave_chan_by_name(dev, name);



	return NULL;

}

EXPORT_SYMBOL_GPL(dma_request_slave_channel);