change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/nvdimm/claim.c
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@@ -1,14 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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 #include <linux/device.h>
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 #include <linux/sizes.h>
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@@ -276,7 +268,7 @@
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 	if (rw == READ) {
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 		if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align)))
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 			return -EIO;
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-		if (memcpy_mcsafe(buf, nsio->addr + offset, size) != 0)
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+		if (copy_mc_to_kernel(buf, nsio->addr + offset, size) != 0)
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 			return -EIO;
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 		return 0;
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 	}
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@@ -308,15 +300,19 @@
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 	return rc;
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 }
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-int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio)
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+int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio,
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+		resource_size_t size)
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 {
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-	struct resource *res = &nsio->res;
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 	struct nd_namespace_common *ndns = &nsio->common;
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+	struct range range = {
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+		.start = nsio->res.start,
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+		.end = nsio->res.end,
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+	};
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-	nsio->size = resource_size(res);
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-	if (!devm_request_mem_region(dev, res->start, resource_size(res),
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+	nsio->size = size;
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+	if (!devm_request_mem_region(dev, range.start, size,
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 				dev_name(&ndns->dev))) {
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-		dev_warn(dev, "could not reserve region %pR\n", res);
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+		dev_warn(dev, "could not reserve region %pR\n", &nsio->res);
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 		return -EBUSY;
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 	}
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@@ -324,14 +320,12 @@
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 	if (devm_init_badblocks(dev, &nsio->bb))
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 		return -ENOMEM;
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 	nvdimm_badblocks_populate(to_nd_region(ndns->dev.parent), &nsio->bb,
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-			&nsio->res);
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+			&range);
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-	nsio->addr = devm_memremap(dev, res->start, resource_size(res),
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-			ARCH_MEMREMAP_PMEM);
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+	nsio->addr = devm_memremap(dev, range.start, size, ARCH_MEMREMAP_PMEM);
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 	return PTR_ERR_OR_ZERO(nsio->addr);
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 }
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-EXPORT_SYMBOL_GPL(devm_nsio_enable);
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 void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio)
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 {
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@@ -339,6 +333,5 @@
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 	devm_memunmap(dev, nsio->addr);
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 	devm_exit_badblocks(dev, &nsio->bb);
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-	devm_release_mem_region(dev, res->start, resource_size(res));
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+	devm_release_mem_region(dev, res->start, nsio->size);
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 }
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-EXPORT_SYMBOL_GPL(devm_nsio_disable);