linux-hardening - [RFC PATCH v2 08/21] psci: Fix the function type for psci_initcall

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Date:   Fri, 13 May 2022 13:21:46 -0700
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     Kees Cook <keescook@...omium.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Joao Moreira <joao@...rdrivepizza.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-hardening@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, llvm@...ts.linux.dev,
        Sami Tolvanen <samitolvanen@...gle.com>
Subject: [RFC PATCH v2 08/21] psci: Fix the function type for psci_initcall_t

Functions called through a psci_initcall_t pointer all have
non-const arguments. Fix the type definition to avoid tripping
indirect call checks with CFI_CLANG.

Reported-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
---
 drivers/firmware/psci/psci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index cfb448eabdaa..6554bf4b8c99 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -521,7 +521,7 @@ static int __init psci_probe(void)
 	return 0;
 }
 
-typedef int (*psci_initcall_t)(const struct device_node *);
+typedef int (*psci_initcall_t)(struct device_node *);
 
 /*
  * PSCI init function for PSCI versions >=0.2
-- 
2.36.0.550.gb090851708-goog