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Sat, 12 Sep 2026 12:12:19 -0700 (PDT) Received: from gmail.com ([58.84.61.98]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-14365b348cbsm14722239c88.3.2026.09.12.12.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Sep 2026 12:12:18 -0700 (PDT) From: Sumeet Pawnikar To: rafael@kernel.org, krzk@kernel.org, amit.kachhap@gmail.com, daniel.lezcano@kernel.org, thara.gopinath@gmail.com, talel@amazon.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, mmayer@broadcom.com, viresh.kumar@linaro.org, sumitg@nvidia.com, peter.griffin@linaro.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, cw00.choi@samsung.com, Frank.Li@nxp.com, s.hauer@pengutronix.de, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, sven@kernel.org, j@jannau.net, marcan@marcan.st, casey.connolly@linaro.org, sre@kernel.org, wens@kernel.org, t.schramm@manjaro.org Cc: bcm-kernel-feedback-list@broadcom.com, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, sumeet4linux@gmail.com Subject: [PATCH v2 0/5] PM: Use %pe to print error pointers symbolically Date: Sun, 13 Sep 2026 00:41:50 +0530 Message-ID: <20260912191156.185448-1-sumeet4linux@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch series is a cleanup for subsystems under power management (linux-pm) that converts several instances of error pointer printing to use the `%pe` format specifier instead of explicitly casting with `PTR_ERR()`. Currently, many drivers use `PTR_ERR()` paired with `%ld` or `%li` to print error codes returned as pointers. By switching to `%pe` and passing the error pointer directly, the logging subsystem will automatically print the symbolic error name (e.g., `-ENOMEM`, `-EPROBE_DEFER`) when `CONFIG_SYMBOLIC_ERRNAME` is enabled, and gracefully fall back to the numeric value otherwise. This change significantly improves the readability of kernel logs and dmesg traces during debugging, without introducing any functional changes or side effects. The cleanup has been applied across the following PM subsystems/drivers: * powercap (intel_rapl_msr) * thermal (cpufreq_cooling, devfreq_cooling, qcom) * cpufreq (bmips, cppc, qoriq, s3c64xx) * devfreq (imx-bus, imx8m-ddrc) * power/supply (various battery and charger drivers) --- changes in v2: - Krzysztof kozlowski suggested to use dev_err_probe instead of dev_err for *_probe() functions during review of v1 series. This will be done in different patch series. - Here in v2, reverted the changes for dev_err under *_probe() functions. - Link to v1: https://lore.kernel.org/all/20260906061755.5103-1-sumeet4linux@gmail.com/ --- Sumeet Pawnikar (5): power: Use %pe to print error pointers symbolically devfreq: Use %pe to print error pointers symbolically cpufreq: Use %pe to print error pointers symbolically thermal: Use %pe to print error pointers symbolically powercap: intel_rapl: Use %pe to print error pointers symbolically drivers/cpufreq/bmips-cpufreq.c | 4 ++-- drivers/cpufreq/cppc_cpufreq.c | 4 ++-- drivers/cpufreq/qoriq-cpufreq.c | 4 ++-- drivers/cpufreq/s3c64xx-cpufreq.c | 5 ++--- drivers/devfreq/imx-bus.c | 4 ++-- drivers/devfreq/imx8m-ddrc.c | 3 +-- drivers/power/reset/macsmc-reboot.c | 4 ++-- drivers/power/supply/cpcap-charger.c | 4 ++-- drivers/power/supply/intel_dc_ti_battery.c | 2 +- drivers/power/supply/qcom_smbx.c | 2 +- drivers/powercap/intel_rapl_msr.c | 4 ++-- drivers/thermal/cpufreq_cooling.c | 4 ++-- drivers/thermal/devfreq_cooling.c | 4 ++-- drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 4 ++-- 14 files changed, 25 insertions(+), 27 deletions(-) -- 2.43.0