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 03462C433F5 for ; Mon, 13 Dec 2021 09:40:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234711AbhLMJkw (ORCPT ); Mon, 13 Dec 2021 04:40:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234236AbhLMJjI (ORCPT ); Mon, 13 Dec 2021 04:39:08 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FF64C0613FE; Mon, 13 Dec 2021 01:37:45 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 1C1E0B80E1A; Mon, 13 Dec 2021 09:37:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5DDF5C00446; Mon, 13 Dec 2021 09:37:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1639388262; bh=D1fW/AwslbXzwl0kmIs79V3URaS/rB1IJksHFONFLdk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nEIxVp7vb++jVBSlkCHDqojUxnsm1nE/SX73589lcDzv3iglTtA0DRFjttms5jrwD Ly9SemPqkwM+L9S4um3ydyE8uB2C5meq400qtAbq6Tyb+t3BNcOR6D+FyB4R5DQ4tY TXw69ayt41rfkVm/UtwWeR/ITbNRNCmXXFReFm+s= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lars-Peter Clausen , Stable@vger.kernel.org, Jonathan Cameron Subject: [PATCH 4.14 43/53] iio: ltr501: Dont return error code in trigger handler Date: Mon, 13 Dec 2021 10:30:22 +0100 Message-Id: <20211213092929.799984468@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211213092928.349556070@linuxfoundation.org> References: <20211213092928.349556070@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lars-Peter Clausen commit ef9d67fa72c1b149a420587e435a3e888bdbf74f upstream. IIO trigger handlers need to return one of the irqreturn_t values. Returning an error code is not supported. The ltr501 interrupt handler gets this right for most error paths, but there is one case where it returns the error code. In addition for this particular case the trigger handler does not call `iio_trigger_notify_done()`. Which when not done keeps the triggered disabled forever. Modify the code so that the function returns a valid irqreturn_t value as well as calling `iio_trigger_notify_done()` on all exit paths. Fixes: 2690be905123 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver") Signed-off-by: Lars-Peter Clausen Link: https://lore.kernel.org/r/20211024171251.22896-1-lars@metafoo.de Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/light/ltr501.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -1279,7 +1279,7 @@ static irqreturn_t ltr501_trigger_handle ret = regmap_bulk_read(data->regmap, LTR501_ALS_DATA1, (u8 *)als_buf, sizeof(als_buf)); if (ret < 0) - return ret; + goto done; if (test_bit(0, indio_dev->active_scan_mask)) scan.channels[j++] = le16_to_cpu(als_buf[1]); if (test_bit(1, indio_dev->active_scan_mask))