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drivers:hv: Make a function to free mmio regions through vmbus

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This patch introduces a function that reverses everything
done by vmbus_allocate_mmio().  Existing code just called
release_mem_region().  Future patches in this series
require a more complex sequence of actions, so this function
is introduced to wrap those actions.

Signed-off-by: Jake Oshins <[email protected]>
Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Jake Oshins 2016-04-05 10:22:51 -07:00 • committed by Greg Kroah-Hartman
commit 97fb77dc87
2 changed files with 16 additions and 1 deletions
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15
drivers/hv/vmbus_drv.c
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@ -1187,6 +1187,21 @@ exit:
}
EXPORT_SYMBOL_GPL(vmbus_allocate_mmio);
/**
* vmbus_free_mmio() - Free a memory-mapped I/O range.
* @start: Base address of region to release.
* @size: Size of the range to be allocated
*
* This function releases anything requested by
* vmbus_mmio_allocate().
*/
void vmbus_free_mmio(resource_size_t start, resource_size_t size)
{
release_mem_region(start, size);
}
EXPORT_SYMBOL_GPL(vmbus_free_mmio);
/**
* vmbus_cpu_number_to_vp_number() - Map CPU to VP.
* @cpu_number: CPU number in Linux terms