From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 303BC36607D; Thu, 30 Jul 2026 15:48:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785426483; cv=none; b=pYtP4GZE1AQ0XbDJClmqOYpP1wKChubpnhjlm3p5kT6//YRrPhAPRq4e1GshzRu0o05/Xpoui7efCih5PqqtNW6k8FjHArmv0IlKzeqs25vaBMrBUnny98nlEuiCyj53wuFUW4I8evitvgpXIk3s4dpnPuE5vxo3AwR6MQNck/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785426483; c=relaxed/simple; bh=te+JtI1fCtM3dPrXCe475dsww3lF7da1lah9AucQQa0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F1xvwcOouB0Mov43gdhAK7rxQXrtpGPAN2te66YGKtMv1jN1CYnYAdNNYLC27wm1s+noaWn4EQXUs8P/O8cLdoNkMbxhROnmzUhZI+imfYRtxAEbWslTU7U+N9KFTB+FZQPPwc1D0KPbaZRa14DhMYRm08Em/A+aPNCl8FM0XzE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JmfT7pp+; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JmfT7pp+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D5441F000E9; Thu, 30 Jul 2026 15:48:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785426482; bh=VAT+rhQov+X3BVOq06+uFNLRdrbqikdDzFSO2Ty2H/4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JmfT7pp+zF6jmUMhOFpoqWlEezePR3EJ5vFMRdm+t5y9mGrLXMnCAIm4SUjP7GRuI L3FXYjYAMWVw2qUDetnaTJfNwIcC5S5zQjJfIh+Zl2r5IiVGRXS2c1Itm1iDAyZpq+ MJq+SbgCycrhI9FGg6I8fAouZwlqcGnt9hM009j8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Wang , Asad Kamal , Alex Deucher Subject: [PATCH 6.12 436/602] drm/amd/pm: make pp_features read-only when scpm is enabled Date: Thu, 30 Jul 2026 16:13:48 +0200 Message-ID: <20260730141445.127562350@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141435.976815864@linuxfoundation.org> References: <20260730141435.976815864@linuxfoundation.org> User-Agent: quilt/0.69 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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yang Wang commit 53c78ab388bfc1a4d72e756815d0db0a842c812e upstream. SCPM owns power feature control when enabled. Make pp_features read-only during sysfs setup by clearing its write bits and store callback. Signed-off-by: Yang Wang Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher (cherry picked from commit 6a5786e191fdce36c5db170e5209cf609e8f0087) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -2509,6 +2509,11 @@ static int default_attr_update(struct am gc_ver != IP_VERSION(9, 4, 3)) || gc_ver < IP_VERSION(9, 0, 0)) *states = ATTR_STATE_UNSUPPORTED; + + if (adev->scpm_enabled) { + dev_attr->attr.mode &= ~S_IWUGO; + dev_attr->store = NULL; + } } else if (DEVICE_ATTR_IS(gpu_metrics)) { if (gc_ver < IP_VERSION(9, 1, 0)) *states = ATTR_STATE_UNSUPPORTED;