From patchwork Tue Oct 26 17:39:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Shtylyov X-Patchwork-Id: 12585313 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7A54C433FE for ; Tue, 26 Oct 2021 17:40:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B2F2461002 for ; Tue, 26 Oct 2021 17:40:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237911AbhJZRm1 (ORCPT ); Tue, 26 Oct 2021 13:42:27 -0400 Received: from mxout02.lancloud.ru ([45.84.86.82]:57250 "EHLO mxout02.lancloud.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237912AbhJZRmV (ORCPT ); Tue, 26 Oct 2021 13:42:21 -0400 Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout02.lancloud.ru 16A6E20C096E Received: from LanCloud Received: from LanCloud Received: from LanCloud From: Sergey Shtylyov To: , Alan Stern , "Greg Kroah-Hartman" CC: Thierry Reding , Jonathan Hunter , Subject: [PATCH v2 22/22] usb: host: xhci-tegra: deny IRQ0 Date: Tue, 26 Oct 2021 20:39:43 +0300 Message-ID: <20211026173943.6829-23-s.shtylyov@omp.ru> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20211026173943.6829-1-s.shtylyov@omp.ru> References: <20211026173943.6829-1-s.shtylyov@omp.ru> MIME-Version: 1.0 X-Originating-IP: [192.168.11.198] X-ClientProxiedBy: LFEXT02.lancloud.ru (fd00:f066::142) To LFEX1907.lancloud.ru (fd00:f066::207) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org If platform_get_irq() returns IRQ0 (considered invalid according to Linus) the driver blithely passes it to usb_add_hcd() that treats IRQ0 as no IRQ at all. Deny IRQ0 right away, returning -EINVAL from the probe() method... Fixes: e84fce0f8837 ("usb: xhci: Add NVIDIA Tegra XUSB controller driver") Signed-off-by: Sergey Shtylyov Reported-by: kernel test robot --- drivers/usb/host/xhci-tegra.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index 1bf494b649bd..7151b1d4f876 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -1439,6 +1439,8 @@ static int tegra_xusb_probe(struct platform_device *pdev) tegra->xhci_irq = platform_get_irq(pdev, 0); if (tegra->xhci_irq < 0) return tegra->xhci_irq; + if (!tegra->xhci_irq) + return -ENIVAL; tegra->mbox_irq = platform_get_irq(pdev, 1); if (tegra->mbox_irq < 0)