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From:   Josh Poimboeuf <jpoimboe@kernel.org>
To:     x86@kernel.org
Cc:     linux-kernel@vger.kernel.org,
        Peter Zijlstra <peterz@infradead.org>,
        Miroslav Benes <mbenes@suse.cz>, linux-btrfs@vger.kernel.org,
        Mark Rutland <mark.rutland@arm.com>,
        linux-scsi@vger.kernel.org, linux-hyperv@vger.kernel.org,
        Arnd Bergmann <arnd@arndb.de>,
        "Guilherme G . Piccoli" <gpiccoli@igalia.com>,
        Michael Kelley <mikelley@microsoft.com>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Nathan Chancellor <nathan@kernel.org>,
        kernel test robot <lkp@intel.com>
Subject: [PATCH v2 10/11] scsi: message: fusion: Mark mpt_halt_firmware() __noreturn
Date:   Wed, 12 Apr 2023 16:49:40 -0700
Message-Id: <d8129817423422355bf30e90dadc6764261b53e0.1681342859.git.jpoimboe@kernel.org>
In-Reply-To: <cover.1681342859.git.jpoimboe@kernel.org>
References: <cover.1681342859.git.jpoimboe@kernel.org>
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mpt_halt_firmware() doesn't return.  Mark it as such.

Fixes the following warnings:

  vmlinux.o: warning: objtool: mptscsih_abort+0x7f4: unreachable instruction
  vmlinux.o: warning: objtool: mptctl_timeout_expired+0x310: unreachable instruction

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202302271743.78emit6I-lkp@intel.com/
Reported-by: Mark Rutland <mark.rutland@arm.com>
Debugged-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 drivers/message/fusion/mptbase.c | 2 +-
 drivers/message/fusion/mptbase.h | 2 +-
 tools/objtool/check.c            | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 9b3ba2df71c7..4f0afce8428d 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -6935,7 +6935,7 @@ EXPORT_SYMBOL(mpt_clear_taskmgmt_in_progress_flag);
  *	@ioc: Pointer to MPT_ADAPTER structure
  *
  **/
-void
+void __noreturn
 mpt_halt_firmware(MPT_ADAPTER *ioc)
 {
 	u32	 ioc_raw_state;
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 4bd0682c65d3..0f226cdad64f 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -945,7 +945,7 @@ extern int	mpt_raid_phys_disk_get_num_paths(MPT_ADAPTER *ioc,
 		u8 phys_disk_num);
 extern int	 mpt_set_taskmgmt_in_progress_flag(MPT_ADAPTER *ioc);
 extern void	 mpt_clear_taskmgmt_in_progress_flag(MPT_ADAPTER *ioc);
-extern void     mpt_halt_firmware(MPT_ADAPTER *ioc);
+extern void __noreturn mpt_halt_firmware(MPT_ADAPTER *ioc);
 
 
 /*
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index a42a2af99ea2..8586d4c36600 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -219,6 +219,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
 		"lbug_with_loc",
 		"machine_real_restart",
 		"make_task_dead",
+		"mpt_halt_firmware",
 		"nmi_panic_self_stop",
 		"panic",
 		"panic_smp_self_stop",
-- 
2.39.2