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commonlib/region: allow empty mmap()/munmap() in region_device_ops 

Instead of assuming all region_devices have an mmap() and munmap()
implementation fail those calls when one isn't provided.

BUG=chrome-os-partner:56151

Change-Id: I9b03e084aa604d52d6b5bab47c0bf99d9fbcd422
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16190
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Aaron Durbin 2016-08-10 11:39:00 -05:00
parent e56191e8ec
commit edd79590b0
1 changed files with 6 additions and 0 deletions
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6
src/commonlib/region.c
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@ -74,6 +74,9 @@ void *rdev_mmap(const struct region_device *rd, size_t offset, size_t size)
rdev = rdev_root(rd); rdev = rdev_root(rd);
if (rdev->ops->mmap == NULL)
return NULL;
return rdev->ops->mmap(rdev, req.offset, req.size); return rdev->ops->mmap(rdev, req.offset, req.size);
} }
@ -83,6 +86,9 @@ int rdev_munmap(const struct region_device *rd, void *mapping)
rdev = rdev_root(rd); rdev = rdev_root(rd);
if (rdev->ops->munmap == NULL)
return -1;
return rdev->ops->munmap(rdev, mapping); return rdev->ops->munmap(rdev, mapping);
} }