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nubus: Set default dma mask for nubus_board devices 

A 32-bit mask is used by default because a NuBus slot has 32
address/data lines and a NuBus board is free to use all of them.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Finn Thain 2018-06-25 21:46:11 +10:00 committed by Geert Uytterhoeven
parent cf85d89562
commit a8c5cb9943
1 changed files with 3 additions and 0 deletions
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3
drivers/nubus/bus.c
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@ -5,6 +5,7 @@
// Copyright (C) 2017 Finn Thain
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/list.h>
#include <linux/nubus.h>
#include <linux/seq_file.h>
@ -93,6 +94,8 @@ int nubus_device_register(struct nubus_board *board)
board->dev.release = nubus_device_release;
board->dev.bus = &nubus_bus_type;
dev_set_name(&board->dev, "slot.%X", board->slot);
board->dev.dma_mask = &board->dev.coherent_dma_mask;
dma_set_mask(&board->dev, DMA_BIT_MASK(32));
return device_register(&board->dev);
}