From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F49321C989; Sun, 24 Mar 2024 23:10:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321844; cv=none; b=Tbe7O2B7ncaTBpwtaBRxUw2ELfZbcVsv6LoqUwspBRu6Pwvga0tRor9KTFWd2KyR8jrHhAjXIhswF9v4KaJgL+Wm/MbBDiB/yP0N0sBXweSncBPH88Pr7Hm3UxszQoAbl1+in+3tVb6mU270gAl0RVV5dowtB9QUOIAy6SGb5JA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321844; c=relaxed/simple; bh=8ZKUgi6Zm68D4WzC4t+cU2OxTpDWbRbA9/z+ZTeTjWQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LN4lkRLSWBwEqXterFxI6mQWUbK/QGHpYZZ9c6D1bkp0inh+IfT0WpqFZq/BjmM0sh93ol9iFczEnbR9bRXHcph4z9SmSq0ZdYa5U6TRpilgvo2MgcYQs8/9YF2m6coLv3n7Rt8dLP2PT4dTcO4uIbcg6JU/AAAJARlzldWQXSo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jNyph13J; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jNyph13J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3E59CC433F1; Sun, 24 Mar 2024 23:10:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711321843; bh=8ZKUgi6Zm68D4WzC4t+cU2OxTpDWbRbA9/z+ZTeTjWQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jNyph13JteZuKjVDjidEAFQbkxaIl9XhkHY+9Dy9g5/hETK54EmrVOqVi6vp6iGkO RaV3zAiCgWgykpbj50kPLGZVKzz4g2Nt/xIsXOO8zwM55P7aR/r76L5192qBOfLU5Z X5/DoogJX0DcMPlvOWGQNNM6BKtuDCrOee9c+cvRfI0l2/mnhWev/aB5MNJOmStsjz GvEiihC77zaSrt7Ekv4H673ciTLgJSuAvp50ZHCMqnStwiU0f6DgIZn+/hGszNRdmS xRiBshDqvwnYS2RMIbF/B1EEzXMGj0CDZzRrlyfJlIpE/RDkDD26IQ3Kanv/n8zShZ kppHaGFMKEJpg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dan Carpenter , Rui Miguel Silva , Alex Elder , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH 6.6 571/638] staging: greybus: fix get_channel_from_mode() failure path Date: Sun, 24 Mar 2024 19:00:08 -0400 Message-ID: <20240324230116.1348576-572-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324230116.1348576-1-sashal@kernel.org> References: <20240324230116.1348576-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Dan Carpenter [ Upstream commit 34164202a5827f60a203ca9acaf2d9f7d432aac8 ] The get_channel_from_mode() function is supposed to return the channel which matches the mode. But it has a bug where if it doesn't find a matching channel then it returns the last channel. It should return NULL instead. Also remove an unnecessary NULL check on "channel". Fixes: 2870b52bae4c ("greybus: lights: add lights implementation") Signed-off-by: Dan Carpenter Reviewed-by: Rui Miguel Silva Reviewed-by: Alex Elder Link: https://lore.kernel.org/r/379c0cb4-39e0-4293-8a18-c7b1298e5420@moroto.mountain Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/staging/greybus/light.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c index 87d36948c6106..c6bd86a5335ab 100644 --- a/drivers/staging/greybus/light.c +++ b/drivers/staging/greybus/light.c @@ -100,15 +100,15 @@ static struct led_classdev *get_channel_cdev(struct gb_channel *channel) static struct gb_channel *get_channel_from_mode(struct gb_light *light, u32 mode) { - struct gb_channel *channel = NULL; + struct gb_channel *channel; int i; for (i = 0; i < light->channels_count; i++) { channel = &light->channels[i]; - if (channel && channel->mode == mode) - break; + if (channel->mode == mode) + return channel; } - return channel; + return NULL; } static int __gb_lights_flash_intensity_set(struct gb_channel *channel, -- 2.43.0