From patchwork Mon Dec 28 12:40:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 354636 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 A7262C4332D for ; Mon, 28 Dec 2020 15:23:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75A3F207B6 for ; Mon, 28 Dec 2020 15:23:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438563AbgL1PXD (ORCPT ); Mon, 28 Dec 2020 10:23:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:34824 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2408020AbgL1OBh (ORCPT ); Mon, 28 Dec 2020 09:01:37 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8628B206E5; Mon, 28 Dec 2020 14:01:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609164082; bh=PKJn3+d49AZyCWIvBqInIUOl+zm6lm+zmz6v55aWkgw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UPJG5POZtyaGPy7AUlcIHGK49wcVMLgkRsjViwiVK28eeQaWmOWXaR7o+J6mrFqPE 40jk27rAeT4vLXV5FRO/flhVXar4A0tA8eL0N6bVGVXYfOzOKHCN42BIzGXc2qXBRO 5pUDecDQcaSGisAQ3uWE/H7N6JvVJp3UQR+hNTUQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, YueHaibing , Laurent Pinchart , Sam Ravnborg , Sasha Levin Subject: [PATCH 5.10 054/717] drm/bridge: tpd12s015: Fix irq registering in tpd12s015_probe Date: Mon, 28 Dec 2020 13:40:52 +0100 Message-Id: <20201228125023.582584608@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228125020.963311703@linuxfoundation.org> References: <20201228125020.963311703@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: YueHaibing [ Upstream commit c2530cc9610d84a5a0118ba40d0f09309605047f ] gpiod_to_irq() return negative value in case of error, the existing code doesn't handle negative error codes. If the HPD gpio supports IRQs (gpiod_to_irq returns a valid number), we use the IRQ. If it doesn't (gpiod_to_irq returns an error), it gets polled via detect(). Fixes: cff5e6f7e83f ("drm/bridge: Add driver for the TI TPD12S015 HDMI level shifter") Signed-off-by: YueHaibing Reviewed-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20201102143024.26216-1-yuehaibing@huawei.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/ti-tpd12s015.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/ti-tpd12s015.c b/drivers/gpu/drm/bridge/ti-tpd12s015.c index 514cbf0eac75a..e0e015243a602 100644 --- a/drivers/gpu/drm/bridge/ti-tpd12s015.c +++ b/drivers/gpu/drm/bridge/ti-tpd12s015.c @@ -160,7 +160,7 @@ static int tpd12s015_probe(struct platform_device *pdev) /* Register the IRQ if the HPD GPIO is IRQ-capable. */ tpd->hpd_irq = gpiod_to_irq(tpd->hpd_gpio); - if (tpd->hpd_irq) { + if (tpd->hpd_irq >= 0) { ret = devm_request_threaded_irq(&pdev->dev, tpd->hpd_irq, NULL, tpd12s015_hpd_isr, IRQF_TRIGGER_RISING |