From 0092908d16c604b8207c2141ec64b0fa4473bb03 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 26 Jun 2019 14:27:06 +0200
Subject: mm: factor out a devm_request_free_mem_region helper

Keep the physical address allocation that hmm_add_device does with the
rest of the resource code, and allow future reuse of it without the hmm
wrapper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
 include/linux/ioport.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/linux/ioport.h')

diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index dd961882bc74..a02b290ca08a 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -285,6 +285,8 @@ static inline bool resource_overlaps(struct resource *r1, struct resource *r2)
        return (r1->start <= r2->end && r1->end >= r2->start);
 }
 
+struct resource *devm_request_free_mem_region(struct device *dev,
+		struct resource *base, unsigned long size);
 
 #endif /* __ASSEMBLY__ */
 #endif	/* _LINUX_IOPORT_H */
-- 
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