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cxl/region: Validate region mode vs decoder mode
[ Upstream commit 1b9b7a6 ] In preparation for a new region mode, do not, for example, allow 'ram' decoders to be assigned to 'pmem' regions and vice versa. Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Reviewed-by: Gregory Price <gregory.price@memverge.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Fan Ni <fan.ni@samsung.com> Link: https://lore.kernel.org/r/167601995111.1924368.7459128614177994602.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> Stable-dep-of: 0718588 ("cxl/region: Do not try to cleanup after cxl_region_setup_targets() fails") Signed-off-by: Sasha Levin <sashal@kernel.org>
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