From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA80535AC3F; Sat, 28 Feb 2026 18:18:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302698; cv=none; b=PbBRkqxKf5MA/w59ufUA2n/syISiKnii2VjD5cO0I7VPUJa4a3w2R2kuhw+bq6fF3faJ50GzNDn/vdioXbK6UBJL/jsD73tylUbZRxRqxVv6RsUXG8D7/A5Z9K3f/Jrual14Ek1lRxDXphhpYX6rWzDqcYi9toU6QVTXDScVUpQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302698; c=relaxed/simple; bh=/BjgGt45Ip7AxPMQAhGDndys9eeQL5U07wmtIDtmMRU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=k+21mgr8HDTbIpS+ai+5BYHCP1yDmWUvrBOsTCxLmEu5hQW96m/BkatDpeEF7j31gTI6FRJS4NihOzSsS31dGyRX5uawTd29AIwO8FRGrUxZS9G/gIFlGT1osVbgIPDhzdc8ARJOhOjo0hGJELuLvNsbXNhWZOVoKtNJ9GWOJ+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QxjDie8H; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QxjDie8H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24066C19424; Sat, 28 Feb 2026 18:18:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302698; bh=/BjgGt45Ip7AxPMQAhGDndys9eeQL5U07wmtIDtmMRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QxjDie8H5GM7pMVAIoR5/QdKoGfGiwykwGYEyCUmHMB0Rl30ymQP8erUxN7M0ugAw 4cj9hV4qWhyrkpEbF9oiSuFTlR2ZAfo2SYPsf0vmGG4e+CwO1x7tRuELr9Ta00vFRF dWo+WxELSgzqZdmKFThKMfOQHU34Uc6ULJw4PcWgsF6mxPUUWmT8a/I/qzStbvePd1 /goCKNMZ8rCJXvB6BJA6/IkoGlQ8iBXDtfEw+iUryMse9mmDl0ctaax3GlkJeJuoHN eGn4kC71RpUyZGx4pqTSUci/cyllnOLXTs77nLqSwjwQhtCY2HDInLZ0HS/eRCyxri Pznwntm9WMA5A== From: Sasha Levin To: patches@lists.linux.dev Cc: Matthias Kaehlcke , stable@vger.kernel.org, Stephen Boyd , Mark Brown , Sasha Levin Subject: [PATCH 5.10 054/147] regulator: core: Use ktime_get_boottime() to determine how long a regulator was off Date: Sat, 28 Feb 2026 13:16:02 -0500 Message-ID: <20260228181736.1605592-54-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181736.1605592-1-sashal@kernel.org> References: <20260228181736.1605592-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Matthias Kaehlcke [ Upstream commit 80d2c29e09e663761c2778167a625b25ffe01b6f ] For regulators with 'off-on-delay-us' the regulator framework currently uses ktime_get() to determine how long the regulator has been off before re-enabling it (after a delay if needed). A problem with using ktime_get() is that it doesn't account for the time the system is suspended. As a result a regulator with a longer 'off-on-delay' (e.g. 500ms) that was switched off during suspend might still incurr in a delay on resume before it is re-enabled, even though the regulator might have been off for hours. ktime_get_boottime() accounts for suspend time, use it instead of ktime_get(). Fixes: a8ce7bd89689 ("regulator: core: Fix off_on_delay handling") Cc: stable@vger.kernel.org # 5.13+ Signed-off-by: Matthias Kaehlcke Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20230223003301.v2.1.I9719661b8eb0a73b8c416f9c26cf5bd8c0563f99@changeid Signed-off-by: Mark Brown Stable-dep-of: 86a8eeb0e913 ("regulator: core: move supply check earlier in set_machine_constraints()") Signed-off-by: Sasha Levin --- drivers/regulator/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 84578a107fef2..6d413f936e0f2 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1510,7 +1510,7 @@ static int set_machine_constraints(struct regulator_dev *rdev) } if (rdev->desc->off_on_delay) - rdev->last_off = ktime_get(); + rdev->last_off = ktime_get_boottime(); /* If the constraints say the regulator should be on at this point * and we have control then make sure it is enabled. @@ -2628,7 +2628,7 @@ static int _regulator_do_enable(struct regulator_dev *rdev) * this regulator was disabled. */ ktime_t end = ktime_add_us(rdev->last_off, rdev->desc->off_on_delay); - s64 remaining = ktime_us_delta(end, ktime_get()); + s64 remaining = ktime_us_delta(end, ktime_get_boottime()); if (remaining > 0) _regulator_enable_delay(remaining); @@ -2864,7 +2864,7 @@ static int _regulator_do_disable(struct regulator_dev *rdev) } if (rdev->desc->off_on_delay) - rdev->last_off = ktime_get(); + rdev->last_off = ktime_get_boottime(); trace_regulator_disable_complete(rdev_get_name(rdev)); -- 2.51.0