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d=kernel.org; s=k20201202; t=1676358421; bh=faSU9WIlOndHpDhDf2FIwcDy94fg1S+/xLr91iuYnFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=haQ67CC9AnruMMdRvLTP3ur8+9rfxW3kiW8NLQWfr7tHyhY9ET6F9E7ucDtc5OPVR V8ui5J7DmGKI6YpM6s3RuN0BEgPp/zTnZ+REFssZ3oevvAO2c7PQH3bWcJIYTwl6cs FR7+2FEPOdGt0yqGNLg7UTWojyuUbyC3x4unOsqDhORgoeZEHgmKxt7X4ZupgDVwOU mP13mc/quC3FdnBlkNjpmbSYXWbt1fLOxPEeYCxsBPJ/xfixJfB/wjf9fYbs/Cw84m 8AJ+Mn6Ozye8bNGzZXJ/+FdFcGV0KgsLy9yuFiw/Lx8Rx6gYUvFHSq0SPX2bMnh6fI hq5rMOVOB+K9Q== From: Josh Poimboeuf To: linux-kernel@vger.kernel.org Cc: jgross@suse.com, richard.henderson@linaro.org, ink@jurassic.park.msu.ru, mattst88@gmail.com, linux-alpha@vger.kernel.org, linux@armlinux.org.uk, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, loongarch@lists.linux.dev, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, tsbogend@alpha.franken.de, linux-mips@vger.kernel.org, jiaxun.yang@flygoat.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, linuxppc-dev@lists.ozlabs.org, ysato@users.sourceforge.jp, dalias@libc.org, linux-sh@vger.kernel.org, davem@davemloft.net, sparclinux@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, linux-xtensa@linux-xtensa.org, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, paulmck@kernel.org Subject: [PATCH v2 07/24] loongarch/cpu: Make sure play_dead() doesn't return Date: Mon, 13 Feb 2023 23:05:41 -0800 Message-Id: <21245d687ffeda34dbcf04961a2df3724f04f7c8.1676358308.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 Content-type: text/plain X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org play_dead() doesn't return. Make that more explicit with a BUG(). BUG() is preferable to unreachable() because BUG() is a more explicit failure mode and avoids undefined behavior like falling off the edge of the function into whatever code happens to be next. Signed-off-by: Josh Poimboeuf --- arch/loongarch/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index 8c6e227cb29d..51f328169a7b 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -336,7 +336,7 @@ void play_dead(void) iocsr_write32(0xffffffff, LOONGARCH_IOCSR_IPI_CLEAR); init_fn(); - unreachable(); + BUG(); } #endif