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Tue, 31 Mar 2026 00:49:23 -0700 (PDT) Received: from nixos-office ([2001:8a0:e95c:5e00:f8c1:fa51:743d:7994]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43cf2471ee2sm24974967f8f.29.2026.03.31.00.49.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Mar 2026 00:49:23 -0700 (PDT) Sender: Julian Braha From: Julian Braha To: christian.loehle@arm.com, daniel.lezcano@kernel.org, rafael@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Julian Braha Subject: [PATCH] cpuidle: cleanup dead dependencies on CPU_IDLE in Kconfig Date: Tue, 31 Mar 2026 08:49:20 +0100 Message-ID: <20260331074920.41269-1-julianbraha@gmail.com> X-Mailer: git-send-email 2.51.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The Kconfig in the parent directory already has the first 'if CPU_IDLE' gating the inclusion of this Kconfig, meaning that the 'depends on CPUIDLE' statements in these config options are effectively dead code. I propose leaving the 'if CPU_IDLE...endif' condition, and removing these individual 'depends on' statements in Kconfig.mips and Kconfig.powerpc This dead code was found by kconfirm, a static analysis tool for Kconfig. Signed-off-by: Julian Braha --- drivers/cpuidle/Kconfig | 2 +- drivers/cpuidle/Kconfig.mips | 2 +- drivers/cpuidle/Kconfig.powerpc | 2 -- 3 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig index cac5997dca50..d6d8386d3f02 100644 --- a/drivers/cpuidle/Kconfig +++ b/drivers/cpuidle/Kconfig @@ -81,7 +81,7 @@ config HALTPOLL_CPUIDLE before halting in the guest (more efficient than polling in the host via halt_poll_ns for some scenarios). =20 -endif +endif # CPU_IDLE =20 config ARCH_NEEDS_CPU_IDLE_COUPLED def_bool n diff --git a/drivers/cpuidle/Kconfig.mips b/drivers/cpuidle/Kconfig.mips index c3c011af4a35..88728b2b4ea0 100644 --- a/drivers/cpuidle/Kconfig.mips +++ b/drivers/cpuidle/Kconfig.mips @@ -4,7 +4,7 @@ # config MIPS_CPS_CPUIDLE bool "CPU Idle driver for MIPS CPS platforms" - depends on CPU_IDLE && MIPS_CPS + depends on MIPS_CPS depends on SYS_SUPPORTS_MIPS_CPS select ARCH_NEEDS_CPU_IDLE_COUPLED if MIPS_MT || CPU_MIPSR6 select GENERIC_CLOCKEVENTS_BROADCAST if SMP diff --git a/drivers/cpuidle/Kconfig.powerpc b/drivers/cpuidle/Kconfig.powe= rpc index a797a02b7b6f..1931ac8faffb 100644 --- a/drivers/cpuidle/Kconfig.powerpc +++ b/drivers/cpuidle/Kconfig.powerpc @@ -4,7 +4,6 @@ # config PSERIES_CPUIDLE bool "Cpuidle driver for pSeries platforms" - depends on CPU_IDLE depends on PPC_PSERIES default y help @@ -13,7 +12,6 @@ config PSERIES_CPUIDLE =20 config POWERNV_CPUIDLE bool "Cpuidle driver for powernv platforms" - depends on CPU_IDLE depends on PPC_POWERNV default y help --=20 2.51.2