From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47778 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941137AbcKQKhd (ORCPT ); Thu, 17 Nov 2016 05:37:33 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chen-Yu Tsai , Mark Brown Subject: [PATCH 4.8 83/92] ASoC: sun4i-codec: return error code instead of NULL when create_card fails Date: Thu, 17 Nov 2016 11:32:56 +0100 Message-Id: <20161117103228.055271709@linuxfoundation.org> In-Reply-To: <20161117103224.218007793@linuxfoundation.org> References: <20161117103224.218007793@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chen-Yu Tsai commit 85915b63ad8b796848f431b66c9ba5e356e722e5 upstream. When sun4i_codec_create_card fails, we do not assign a proper error code to the return value. The return value would be 0 from the previous function call, or we would have bailed out sooner. This would confuse the driver core into thinking the device probe succeeded, when in fact it didn't, leaving various devres based resources lingering. Make the create_card function pass back a meaningful error code, and assign it to the return value. Fixes: 45fb6b6f2aa3 ("ASoC: sunxi: add support for the on-chip codec on early Allwinner SoCs") Signed-off-by: Chen-Yu Tsai Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/sunxi/sun4i-codec.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -738,11 +738,11 @@ static struct snd_soc_card *sun4i_codec_ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); if (!card) - return NULL; + return ERR_PTR(-ENOMEM); card->dai_link = sun4i_codec_create_link(dev, &card->num_links); if (!card->dai_link) - return NULL; + return ERR_PTR(-ENOMEM); card->dev = dev; card->name = "sun4i-codec"; @@ -842,7 +842,8 @@ static int sun4i_codec_probe(struct plat } card = sun4i_codec_create_card(&pdev->dev); - if (!card) { + if (IS_ERR(card)) { + ret = PTR_ERR(card); dev_err(&pdev->dev, "Failed to create our card\n"); goto err_unregister_codec; }