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diff --git a/clang-tools-extra/clang-tidy/linuxkernel/MustCheckErrsCheck.h b/clang-tools-extra/clang-tidy/linuxkernel/MustCheckErrsCheck.h
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+//===--- MustCheckErrsCheck.h - clang-tidy ----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LINUXKERNEL_MUSTCHECKERRSCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LINUXKERNEL_MUSTCHECKERRSCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace linuxkernel {
+
+/// Checks Linux kernel code to see if it uses the results from the functions in
+/// linux/err.h. Also checks to see if code uses the results from functions that
+/// directly return a value from one of these error functions.
+///
+/// This is important in the Linux kernel because ERR_PTR, PTR_ERR, IS_ERR,
+/// IS_ERR_OR_NULL, ERR_CAST, and PTR_ERR_OR_ZERO return values must be checked,
+/// since positive pointers and negative error codes are being used in the same
+/// context. These functions are marked with
+/// __attribute__((warn_unused_result)), but some kernel versions do not have
+/// this warning enabled for clang.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/linuxkernel-must-use-errs.html
+class MustCheckErrsCheck : public ClangTidyCheck {
+public:
+  MustCheckErrsCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace linuxkernel
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LINUXKERNEL_MUSTCHECKERRSCHECK_H