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=-10.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 5E026C433E1 for ; Mon, 20 Jul 2020 16:47:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A9F32070A for ; Mon, 20 Jul 2020 16:47:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595263663; bh=eIg5zlpARQ0ncoOVYVLpaBxwWN3Nt8ngvgaUr4OFHAc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xUPquoiEE6lKHh2/5no9vKNRC+RzBZ0cKe6LUJg3RXXwnqBCmj4RNdQ60EOg37CKm wIBNCSFNoWM1FkxfgmsGT3EuS6na391Wa0UPacK0Xm3qVeeN8Zdo0gnzPdH24L0JNJ W5IOBlRx1pxCZck6MLsMNWOXJIBh/zoJ5i015zF0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389124AbgGTQrl (ORCPT ); Mon, 20 Jul 2020 12:47:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:58326 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729444AbgGTPjT (ORCPT ); Mon, 20 Jul 2020 11:39:19 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 613CD22CAF; Mon, 20 Jul 2020 15:39:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595259558; bh=eIg5zlpARQ0ncoOVYVLpaBxwWN3Nt8ngvgaUr4OFHAc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=raAgnlNkWFtjhsjKJLSAfjAPtZ2AVdd3JvuutBALKmM6DbB0osoroItbX9IrxKB5g rmIjWFpS+ZHP6OGe/ybuXoO9rHWpwe31rgW2c4ha7YxxzLsAmOzkQKaSqu8xivR7uc lMtIVsM93sc9y2z8h+iurPtH7OFni9cjy6K8W2DA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Esben Haabendal Subject: [PATCH 4.4 53/58] uio_pdrv_genirq: fix use without device tree and no interrupt Date: Mon, 20 Jul 2020 17:37:09 +0200 Message-Id: <20200720152749.917907260@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200720152747.127988571@linuxfoundation.org> References: <20200720152747.127988571@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Esben Haabendal commit bf12fdf0ab728ca8e5933aac46dd972c0dd0421e upstream. While e3a3c3a20555 ("UIO: fix uio_pdrv_genirq with device tree but no interrupt") added support for using uio_pdrv_genirq for devices without interrupt for device tree platforms, the removal of uio_pdrv in 26dac3c49d56 ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead") broke the support for non device tree platforms. This change fixes this, so that uio_pdrv_genirq can be used without interrupt on all platforms. This still leaves the support that uio_pdrv had for custom interrupt handler lacking, as uio_pdrv_genirq does not handle it (yet). Fixes: 26dac3c49d56 ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead") Signed-off-by: Esben Haabendal Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200701145659.3978-3-esben@geanix.com Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio_pdrv_genirq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/uio/uio_pdrv_genirq.c +++ b/drivers/uio/uio_pdrv_genirq.c @@ -148,7 +148,7 @@ static int uio_pdrv_genirq_probe(struct if (!uioinfo->irq) { ret = platform_get_irq(pdev, 0); uioinfo->irq = ret; - if (ret == -ENXIO && pdev->dev.of_node) + if (ret == -ENXIO) uioinfo->irq = UIO_IRQ_NONE; else if (ret < 0) { dev_err(&pdev->dev, "failed to get IRQ\n");