Messages in this thread Patch in this message | | | From | "K. Y. Srinivasan" <> | Subject | [PATCH 2/6] hv: Make a function to free mmio regions through vmbus | Date | Wed, 9 Mar 2016 13:35:21 -0800 |
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From: Jake Oshins <jakeo@microsoft.com>
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> --- drivers/hv/vmbus_drv.c | 15 +++++++++++++++ include/linux/hyperv.h | 2 +- 2 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 64713ff..44e95a4 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1180,6 +1180,21 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, 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 * diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index aa0fadc..ecd81c3 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1091,7 +1091,7 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj, resource_size_t min, resource_size_t max, resource_size_t size, resource_size_t align, bool fb_overlap_ok); - +void vmbus_free_mmio(resource_size_t start, resource_size_t size); int vmbus_cpu_number_to_vp_number(int cpu_number); u64 hv_do_hypercall(u64 control, void *input, void *output); -- 1.7.4.1
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