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ARM: dmabounce: get rid of dma_needs_bounce global function

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Pass the device type specific needs_bounce function in at dmabounce
register time, avoiding the need for a platform specific global
function to do this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-07-04 08:32:21 +01:00
parent c289b2e0cc
commit 0703ed2a6b
5 changed files with 53 additions and 66 deletions
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8
arch/arm/common/dmabounce.c
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@@ -79,6 +79,8 @@ struct dmabounce_device_info {
struct dmabounce_pool large;
rwlock_t lock;
int (*needs_bounce)(struct device *, dma_addr_t, size_t);
};
#ifdef STATS
@@ -236,7 +238,7 @@ static int needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
return 1;
}
return dma_needs_bounce(dev, dma_addr, size) ? 1 : 0;
return !!dev->archdata.dmabounce->needs_bounce(dev, dma_addr, size);
}
static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
@@ -430,7 +432,8 @@ static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev,
}
int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
unsigned long large_buffer_size)
unsigned long large_buffer_size,
int (*needs_bounce_fn)(struct device *, dma_addr_t, size_t))
{
struct dmabounce_device_info *device_info;
int ret;
@@ -466,6 +469,7 @@ int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
device_info->dev = dev;
INIT_LIST_HEAD(&device_info->safe_buffers);
rwlock_init(&device_info->lock);
device_info->needs_bounce = needs_bounce_fn;
#ifdef STATS
device_info->total_allocs = 0;