From patchwork Tue Jun 14 06:58:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 581929 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 44906C433EF for ; Tue, 14 Jun 2022 07:00:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236960AbiFNHAQ (ORCPT ); Tue, 14 Jun 2022 03:00:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230329AbiFNHAP (ORCPT ); Tue, 14 Jun 2022 03:00:15 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D04C63B00F; Tue, 14 Jun 2022 00:00:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1655190013; x=1686726013; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=T4nzZezDWWWUTOy8OMeuQhCOxOSUCA20xYUUYSUJEJ4=; b=xtGnTo4nJB5KINBX3erdkGK3vH9x+W3apBUbeoRsGzce1uvlNToY6ohF MPIa5qdprHE48Izp8LoF8CBi6+KxC2AHYChxRer8eXCl6n8YPP1YqKfwj KPTiTfn5Z3Y71SrljSHoa7jFtThP1RYI6vFyS+nWpPG+B7J/xblkZeQX/ J9f4y1+EZqxmK9xsC7QdAzyysis7dnVpp3IV6YRIsT8h8GpH0hmIYV9N3 BhipSxorQNpL6a3KSJu7uEhyN3z7tb+p7ex1naFxby3N3A0F9QVgP57UK SfTCt76CvMlLDwnSwxMfrwGuzL9ytfKVJXfwdf1fG6rr1+y2moVOhPw5/ A==; X-IronPort-AV: E=Sophos;i="5.91,299,1647327600"; d="scan'208";a="99902883" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 14 Jun 2022 00:00:12 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Tue, 14 Jun 2022 00:00:12 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Tue, 14 Jun 2022 00:00:10 -0700 From: Conor Dooley To: Mark Brown CC: Daire McNamara , Lewis Hanly , Conor Dooley , , , , Yang Li Subject: [PATCH] spi: microchip-core: fix potentially incorrect return from probe Date: Tue, 14 Jun 2022 07:58:10 +0100 Message-ID: <20220614065809.1969177-1-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org If platform_get_irqi() returns 0, the error case will be triggered but probe() will return 0 rather than an error. Ape the other drivers using this pattern and return -ENXIO. Reported-by: Yang Li Link: https://lore.kernel.org/linux-spi/20220609055533.95866-2-yang.lee@linux.alibaba.com/ Signed-off-by: Conor Dooley --- drivers/spi/spi-microchip-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-microchip-core.c b/drivers/spi/spi-microchip-core.c index 5b22a1395554..856a68fd8e9f 100644 --- a/drivers/spi/spi-microchip-core.c +++ b/drivers/spi/spi-microchip-core.c @@ -541,7 +541,7 @@ static int mchp_corespi_probe(struct platform_device *pdev) spi->irq = platform_get_irq(pdev, 0); if (spi->irq <= 0) { dev_err(&pdev->dev, "invalid IRQ %d for SPI controller\n", spi->irq); - ret = spi->irq; + ret = -ENXIO; goto error_release_master; }