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 AEA4F2EAEA; Fri, 24 Nov 2023 19:08:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nxNASTGP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D66FC433C8; Fri, 24 Nov 2023 19:08:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700852905; bh=e59Vo7FSJeFAJUqsn/N3NM74avsH9hLxPzXzvZ5doKM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nxNASTGPQYhCDRSS4LakHH+DkkReYDJjbqMz5DLKaxMDaxjv9yHdSEkI2MeMNgy5x gpfxF60QAEkGZ696F7CLw1MzqczVYkbM0Q7YwM1SQKTtqskP3+BSHHD4Wa1jxusOSA 0cgtunZXuLyzfKVg+BxhfVgVWWpI963XEHoUNnrQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Basavaraj Natikar , Mathias Nyman , Oleksandr Natalenko Subject: [PATCH 5.10 144/193] xhci: Enable RPM on controllers that support low-power states Date: Fri, 24 Nov 2023 17:54:31 +0000 Message-ID: <20231124171952.965477072@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231124171947.127438872@linuxfoundation.org> References: <20231124171947.127438872@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Basavaraj Natikar commit a5d6264b638efeca35eff72177fd28d149e0764b upstream. Use the low-power states of the underlying platform to enable runtime PM. If the platform doesn't support runtime D3, then enabling default RPM will result in the controller malfunctioning, as in the case of hotplug devices not being detected because of a failed interrupt generation. Cc: Mario Limonciello Signed-off-by: Basavaraj Natikar Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20231019102924.2797346-16-mathias.nyman@linux.intel.com Cc: Oleksandr Natalenko Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -505,7 +505,9 @@ static int xhci_pci_probe(struct pci_dev /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */ pm_runtime_put_noidle(&dev->dev); - if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW) + if (pci_choose_state(dev, PMSG_SUSPEND) == PCI_D0) + pm_runtime_forbid(&dev->dev); + else if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW) pm_runtime_allow(&dev->dev); dma_set_max_seg_size(&dev->dev, UINT_MAX);