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 7AE8A38A70B; Thu, 20 Aug 2026 16:29:43 +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=1787243384; cv=none; b=VNe2IjHcPbAbyF1HwXkiHPdDCXXIoY7NL8s2I4B16TvF1K7aoQlnw3zvumt2EmADx+27eIs2s0LV0GnPYb0g0cQl5IqtAadD9D3aZo/veZiAEqwgtAspxruS6LKhnwBpWUBvHiwIP1R4n8ycqf+FhUH2kDYJGAQa/7ed9fjTJ2A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787243384; c=relaxed/simple; bh=IVdnlqcJpe3/tqXGBxOEoA7B84zrVA0cN8IAES05Q7Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y2lhE9IUt0kGFrqOF+2RIPDnmywsPat7Cmv9e/MQ/mJofDRRJfSI20eBWEMXnO1274ZEKOeZtw0isk1FLmRWzNRMXWVVykbqSkEz3towXQXMqYxoCUhznsonYaNxi3YYHFrSUz5NqscZyzzzbtg5vnvcak9ziyecpTazcyyytLA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zdeRFg0p; 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="zdeRFg0p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D62731F000E9; Thu, 20 Aug 2026 16:29:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787243383; bh=Bb12yhnacCJ5Uy1T6f5Qj9uQ/k3fBQWJ18xqiSE976s=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zdeRFg0pknThr7rgsgxTIuf0J8VNWBf2E5J4c3+NF3pnY1Vx1CKSFcU+h4WymneuF Y/W8a1/S44ksrG625d3V6cbPlrneW1XFZ0Bn0xIGGaOp+z0SMWEIUNxqm/XyvuJ/g2 izhGYJAQi2m+LyzhypvPQz4vtcXjSUY/AMX+aJbg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Guangshuo Li , Alex Deucher Subject: [PATCH 5.15 037/272] drm/radeon: fix autosuspend cleanup during teardown Date: Thu, 20 Aug 2026 16:53:41 +0200 Message-ID: <20260820145232.339942217@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260820145231.229664293@linuxfoundation.org> References: <20260820145231.229664293@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guangshuo Li commit 587be7a17358ef8c0106775fcedae5a7bef50735 upstream. radeon_driver_load_kms() calls pm_runtime_use_autosuspend() for PX devices, but radeon_driver_unload_kms() does not call the matching pm_runtime_dont_use_autosuspend() during teardown. If the autosuspend delay is set to a negative value while autosuspend is enabled, the runtime PM core increments usage_count to prevent runtime suspend. Without calling pm_runtime_dont_use_autosuspend() during teardown, this reference is not dropped. The documentation for pm_runtime_use_autosuspend() also notes that it is important to undo it with pm_runtime_dont_use_autosuspend() at driver exit time, unless runtime PM was initially enabled with devm_pm_runtime_enable(). Add the missing pm_runtime_dont_use_autosuspend() call to the driver unload path. This issue was found by manual code inspection. Fixes: 10ebc0bc0934 ("drm/radeon: add runtime PM support (v2)") Signed-off-by: Guangshuo Li Signed-off-by: Alex Deucher (cherry picked from commit 0fdc1ff82ea14844c22795e9e0813c3ca03235e1) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_kms.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -72,6 +72,7 @@ void radeon_driver_unload_kms(struct drm if (radeon_is_px(dev)) { pm_runtime_get_sync(dev->dev); pm_runtime_forbid(dev->dev); + pm_runtime_dont_use_autosuspend(dev->dev); } radeon_acpi_fini(rdev);