From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01A0CC433E0 for ; Thu, 18 Jun 2020 02:42:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB13121D7A for ; Thu, 18 Jun 2020 02:42:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592448141; bh=tSkrvnMpksnJQhC64AZxp0y0YhNgOq7eJDfG0aV9Ngs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Pf2jOwLbVkIZ+LNnJgIvlKvEnz8xkQ/c0YSdOFJEUihMUdvNJ1Gv9UQaOTI9tJF4T ug9ZM+eCNPx9jIgVXMj4HVSHzixkg/Kr+Pzi/HYCIx9KA6LhDshCWfOPtFOJQzKjwD wBsS8zSfhO12LasVFz+6uv6Mp6Igcf9b9zwGYKU4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728849AbgFRBMI (ORCPT ); Wed, 17 Jun 2020 21:12:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:40494 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728847AbgFRBMF (ORCPT ); Wed, 17 Jun 2020 21:12:05 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C0B1E21924; Thu, 18 Jun 2020 01:12:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592442724; bh=tSkrvnMpksnJQhC64AZxp0y0YhNgOq7eJDfG0aV9Ngs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YcRGsN56A8Ustpk3K5nxRYuyhwyI5psnJ1B1rarHSykTDwVWOUAh2dzVfPLX60Ac2 SVytTJGkciqdki3jNLAUagPDxhlbZ16CC//CJSUMeYWPj0fc1nRUphCNhsqn/3lw5f BLrnHP6D0rJd25SW2h8tEzB6XYeWvxrj4PP+yJdE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nicolas Saenz Julienne , Lorenzo Pieralisi , Florian Fainelli , Sasha Levin , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 182/388] PCI: brcmstb: Assert fundamental reset on initialization Date: Wed, 17 Jun 2020 21:04:39 -0400 Message-Id: <20200618010805.600873-182-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618010805.600873-1-sashal@kernel.org> References: <20200618010805.600873-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Nicolas Saenz Julienne [ Upstream commit 22e21e51ce755399fd42055a3f668ee4af370881 ] While preparing the driver for upstream this detail was missed. If not asserted during the initialization process, devices connected on the bus will not be made aware of the internal reset happening. This, potentially resulting in unexpected behavior. Link: https://lore.kernel.org/r/20200507172020.18000-1-nsaenzjulienne@suse.de Fixes: c0452137034b ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver") Signed-off-by: Nicolas Saenz Julienne Signed-off-by: Lorenzo Pieralisi Acked-by: Florian Fainelli Signed-off-by: Sasha Levin --- drivers/pci/controller/pcie-brcmstb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index c9ecc4d639c1..2297910bf6e4 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -697,6 +697,7 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie) /* Reset the bridge */ brcm_pcie_bridge_sw_init_set(pcie, 1); + brcm_pcie_perst_set(pcie, 1); usleep_range(100, 200); -- 2.25.1