From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pz2-f39.google.com (mail-pz2-f39.google.com [74.125.228.39]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12DEE3A4F47 for ; Sat, 12 Sep 2026 19:12:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.228.39 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789240341; cv=none; b=IDUgP6KR7iMELXSVLWw+3foKVnIUsrbfgYOfJlht9CU6S5yXduO0cu1bHv0eI3nYbB1Ph6tkwieHihaukQBfCiZaBdOo5oePMdtfsON7K/8wHCijKfnt0xIvAnqOLmJIsoju5VwykCUuqap9PKm8jKfUpdMDDe0WAkN6SsAC1ms= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789240341; c=relaxed/simple; bh=JlupTLV8Cln4XfTiHb4RxwCt6Slbwqs/r3cqkHuWFwc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qJOUeqEutokzOOFCMNeh7XAMpd0E7Hw8XtHw7lSR2fOQXpz6G0NlyP3KG/5xIEQcjUuz97tjd7AN1r0XSnmEVwOQbjCk4YuNE/q/6c82asOMUljM0aJ44EAtc7ydBQ8oPUBSPv///f1qOh2JneRjvDxD6ihHLFFQyTtleN2U298= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=E7liz1hB; arc=none smtp.client-ip=74.125.228.39 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="E7liz1hB" Received: by mail-pz2-f39.google.com with SMTP id 41be03b00d2f7-cc4b29fa803so806274a12.1 for ; Sat, 12 Sep 2026 12:12:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1789240339; x=1789845139; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=ghx8XBCWnxG/J6Ds3c+N5I7YNs+hz5/VoWXUJ3eWQPY=; b=E7liz1hBcWKo9hD9cGxwgGiA0VBvzMAku2mG+BjnGkXXdeYy5H0ACIvXObYuRp64ZM tG6UlEVFPxWa4VnOaAdBdnD+a3tSefi+71h/Bd53KYZ3wiLM0CbsuPTG08XmlafY7Vfl xKMtsp86hGj8pKPdTe4imcKy92ikjNJsZp0DJVBPdiZ5SHATA/fq2HVKrP69mJ65vfjj hpGJFk+0Hsq0XTvrLIN8YmQuhZ7aZd/6GXUkvCfTuiEaLIzgRgWnt535qBUWcFRqtNL8 G3yoCiyh1t3TfNU8O7BOrnQhUiV7Rhm/NA3025Byw364eUoBxhftggbG+QRVmsRJZ8u9 pUkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1789240339; x=1789845139; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ghx8XBCWnxG/J6Ds3c+N5I7YNs+hz5/VoWXUJ3eWQPY=; b=rcgGS7EocScl7KhapVtzIeCyvZ755dehSHR0IfEuO/ybikm/RI1MXhB5JTG3m1U5+f /glq2VdKsu98CqNqG770MQYTE2d4g7D3b37i6EEbTnPt6SfJc5uTHdThJYKn53n9rNfO kVwLTz80KjwteV2OqJ04sa4mU7L0otGLg3J3nBzWAt5izZfh7bpf1qJ35B5IiBdPNuCT CYIiUX/bgrUNxN7QC7UkZtyMqxGG7KxZWBqdtxJNB5/okfZuCihu6UBIZtU5EN4Ip8E+ CIU71YFGZKM92M9XnbC8wM57fmNh0453Y91xpWq+/zZ6lA+GZ4PB8GIyvykDMv2pwApd Answ== X-Forwarded-Encrypted: i=1; AKwUvBzgJbXTjE8u8ypKabw7nOXmPvugl7pN63l8qyQuMN/6sGgCGPY6kUUhsA3TuX1jk947Bh6/S1WfJLJxtGk=@vger.kernel.org X-Gm-Message-State: AFuF++lFKXuxA9H8SQunrS5sCdVI/It8zekKpLT23hY2TAaG0w5jwvJU BXIkKogesVEdSeqxYjacNEpOlN2kAqo8owWClVuj1OCHGZnkLPv2z5AE X-Gm-Gg: AYBFou2q8TFkgbueOQUSpFRaxToYSc1GGu2xa+FEbpZcSYbchuLaRgMrajcmz+l8giw D+cDx6jRsMj+9wGAMKsVbRuDBacOLU+FKQVRPGEmy4WJ1eeiFnX9oGM9SIlcR+Z9qVhlaHUTwRm Tkbz2IWy1etebozaaMzOcpIjkQdRHcXg6PrSwGLEUv4WU1IL4MjTgAano+qVCF/epCcPc/vZ8ty 9qeIf0BxTenlmYnlAvfkNmrbzH+DezRfu0bGbaZwIafHt65rO09jvldt3jVujD0ka+vsENzr5ng icLYcgI9M6mtvkQuNlug4gFCziEDMXqkRLVBN6gwP/QmBYjxcqJtzIOUj48gYnYWxOzGZba7ky9 VztwuaqonsxfooTQNAQ1EJTpu1lBuhN0wWe4jnAuvHt478pKwQdJ0i7eY8RMdyB+GOTAzgz9uI/ U69GRqvDySg9OQx+cldY3k/pDn6+F4ITAL3PHuHANqcgVwxddEHQ6pjhnjJvZHEIAhvTOW X-Received: by 2002:a05:6a20:a128:b0:3cd:67e9:8565 with SMTP id adf61e73a8af0-3daed19f362mr18812158637.9.1789240339105; 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-kernel@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