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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/arch/x86/kernel/pmem.c
..
..
@@ -27,6 +27,11 @@
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 	 * simply here to trigger the module to load on demand.
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 	 */
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 	pdev = platform_device_alloc("e820_pmem", -1);
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-	return platform_device_add(pdev);
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+
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+	rc = platform_device_add(pdev);
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+	if (rc)
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+		platform_device_put(pdev);
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+
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+	return rc;
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 }
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 device_initcall(register_e820_pmem);