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authorJake Oshins <jakeo@microsoft.com>2016-04-05 10:22:51 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 14:01:37 -0700
commit97fb77dc87582300fa3c141b63699f853576cab1 (patch)
tree4a9aecf983c55b40e7412d8c09127cbcca5838b2 /drivers/hv
parente16dad6bfe1437aaee565f875a6713ca7ce81bdf (diff)
downloadlinux-97fb77dc87582300fa3c141b63699f853576cab1.tar.bz2
drivers:hv: Make a function to free mmio regions through vmbus
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 <jakeo@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/vmbus_drv.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 799518b3cdc5..60553c156f90 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1188,6 +1188,21 @@ 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
*