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[83.131.188.112]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c255f1febf3sm274995866b.52.2026.08.30.01.53.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 Aug 2026 01:53:41 -0700 (PDT) From: Dmitry Sinyavin To: Greg Kroah-Hartman , Jiri Slaby Cc: Dmitry Sinyavin , Stephan Gerhold , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] serial: msm: select PM_OPP Date: Sun, 30 Aug 2026 10:53:40 +0200 Message-ID: <20260830085340.2542624-1-sinyavin@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Commit 173ebdedcd84 ("serial: msm: Use OPP table for DVFS support") made the MSM serial driver unconditionally configure the core clock through the OPP framework during probe. When CONFIG_PM_OPP is disabled, devm_pm_opp_set_clkname() is a stub that returns -EOPNOTSUPP, so every MSM serial port fails to probe. Select PM_OPP to keep minimal configurations functional. Fixes: 173ebdedcd84 ("serial: msm: Use OPP table for DVFS support") Signed-off-by: Dmitry Sinyavin --- Tested with an ARM multi_v7_defconfig after forcing SERIAL_MSM=y and PM_OPP=n. olddefconfig selected PM_OPP=y, and msm_serial.o built with Clang and W=1. drivers/tty/serial/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index cf7dba473b20..bf680d22199b 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -904,6 +904,7 @@ config SERIAL_JSM config SERIAL_MSM tristate "MSM on-chip serial port support" depends on ARCH_QCOM || COMPILE_TEST + select PM_OPP select SERIAL_CORE config SERIAL_MSM_CONSOLE base-commit: 45c13f3f9e3bb15fd89ff2864c6f627a3b4b4229 -- 2.53.0