From patchwork Tue Apr 23 19:19:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. 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Wysocki" To: Linux ACPI Cc: LKML , Linux PM , Mark Pearson , "Rafael J. Wysocki" , Mario Limonciello Subject: [PATCH v1] ACPI: PM: s2idle: Evaluate all Low-Power S0 Idle _DSM functions Date: Tue, 23 Apr 2024 21:19:36 +0200 Message-ID: <12427214.O9o76ZdvQC@kreacher> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudeluddgudefkecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpeegfffhudejlefhtdegffekteduhfethffhieettefhkeevgfdvgfefieekiefgheenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepiedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehmphgvrghrshhonheslhgvnhhovhhordgtohhmpdhrtghpthhtoheprhgrfhgrvghlsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehmrghrihhordhlihhmohhntghivghllhhosegrmhgurdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 From: Rafael J. Wysocki Commit 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems") attempted to avoid evaluating the same Low- Power S0 Idle _DSM functions for different UUIDs, but that turns out to be a mistake, because some systems in the field are adversely affected by it. Address this by allowing all Low-Power S0 Idle _DSM functions to be evaluated, but still print the message regarding duplication of Low- Power S0 Idle _DSM function sets for different UUIDs. Fixes: 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218750 Reported-and-tested-by: Mark Pearson Signed-off-by: Rafael J. Wysocki --- drivers/acpi/x86/s2idle.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) Index: linux-pm/drivers/acpi/x86/s2idle.c =================================================================== --- linux-pm.orig/drivers/acpi/x86/s2idle.c +++ linux-pm/drivers/acpi/x86/s2idle.c @@ -492,16 +492,14 @@ static int lps0_device_attach(struct acp unsigned int func_mask; /* - * Avoid evaluating the same _DSM function for two - * different UUIDs and prioritize the MSFT one. + * Log a message if the _DSM function sets for two + * different UUIDs overlap. */ func_mask = lps0_dsm_func_mask & lps0_dsm_func_mask_microsoft; - if (func_mask) { + if (func_mask) acpi_handle_info(adev->handle, "Duplicate LPS0 _DSM functions (mask: 0x%x)\n", func_mask); - lps0_dsm_func_mask &= ~func_mask; - } } }