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 09B9428314A; Tue, 26 Aug 2025 13:31:09 +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=1756215069; cv=none; b=jNi7OCpgBg9Dy4s2dAU27yzoWLG7QK/6AzPZciU9s35T1qYPEecDpp9k3h8bjbMCO93Igl3RIDsqaOETJ0hH+0prYnTo3fVzFPeqmo7NJ5bo69Bo0h0KNMJ7xxtDgJP4woaFLfa7KKtso4OHGGo/8OzPlGDO+PWXhknIEPEz5y0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756215069; c=relaxed/simple; bh=cADI3dfpAytBmOFDJazL8Fa6TLNAvEoSQpD24+0oZB4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ns/Y1unfMcCJ4p/c9RK+TsQdlurp0nP7wMfU9asZkBrnqLhwR/LpltH6k2gHVa5xlsJLgFkm95BUm/s1Vzaxl99MQlvK/ioZQHzPXk2TVuBmCDkyeKaRqEvpQUUEewdb3H5dFZeClu3b+PV/XpqLwN2q7JPs6N8sA3ViJUHK/Rg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OLVohrs7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OLVohrs7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D3AFC4CEF1; Tue, 26 Aug 2025 13:31:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756215068; bh=cADI3dfpAytBmOFDJazL8Fa6TLNAvEoSQpD24+0oZB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OLVohrs7etNLleM11pK8QGsU0XEhDz0QY8Epqi8r73prB9rxQtTQK6xstraTKEqsv NmdQby+QbA6o9Ov5MxgjG9FBPReRU/Jw8Fyz7vk1wXT06/Iax6Eij0nRmqDCPZfjYb 47XZId1BC2ytLp+by+qjZXJMfDmzpyg1SSPAhLjg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Damien Le Moal , Hannes Reinecke , Niklas Cassel , Sasha Levin Subject: [PATCH 6.1 375/482] ata: Fix SATA_MOBILE_LPM_POLICY description in Kconfig Date: Tue, 26 Aug 2025 13:10:28 +0200 Message-ID: <20250826110940.095241178@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110930.769259449@linuxfoundation.org> References: <20250826110930.769259449@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Damien Le Moal [ Upstream commit ed62a62a18bc144f73eadf866ae46842e8f6606e ] Improve the description of the possible default SATA link power management policies and add the missing description for policy 5. No functional changes. Fixes: a5ec5a7bfd1f ("ata: ahci: Support state with min power but Partial low power state") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke Reviewed-by: Niklas Cassel [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/ata/Kconfig | 33 +++++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 8 deletions(-) --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -117,7 +117,7 @@ config SATA_AHCI config SATA_MOBILE_LPM_POLICY int "Default SATA Link Power Management policy for low power chipsets" - range 0 4 + range 0 5 default 0 depends on SATA_AHCI help @@ -126,15 +126,32 @@ config SATA_MOBILE_LPM_POLICY chipsets are typically found on most laptops but desktops and servers now also widely use chipsets supporting low power modes. - The value set has the following meanings: + Each policy combines power saving states and features: + - Partial: The Phy logic is powered but is in a reduced power + state. The exit latency from this state is no longer than + 10us). + - Slumber: The Phy logic is powered but is in an even lower power + state. The exit latency from this state is potentially + longer, but no longer than 10ms. + - DevSleep: The Phy logic may be powered down. The exit latency from + this state is no longer than 20 ms, unless otherwise + specified by DETO in the device Identify Device Data log. + - HIPM: Host Initiated Power Management (host automatically + transitions to partial and slumber). + - DIPM: Device Initiated Power Management (device automatically + transitions to partial and slumber). + + The possible values for the default SATA link power management + policies are: 0 => Keep firmware settings - 1 => Maximum performance - 2 => Medium power - 3 => Medium power with Device Initiated PM enabled - 4 => Minimum power + 1 => No power savings (maximum performance) + 2 => HIPM (Partial) + 3 => HIPM (Partial) and DIPM (Partial and Slumber) + 4 => HIPM (Partial and DevSleep) and DIPM (Partial and Slumber) + 5 => HIPM (Slumber and DevSleep) and DIPM (Partial and Slumber) - Note "Minimum power" is known to cause issues, including disk - corruption, with some disks and should not be used. + Excluding the value 0, higher values represent policies with higher + power savings. config SATA_AHCI_PLATFORM tristate "Platform AHCI SATA support"