Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760031AbaGYJCN (ORCPT ); Fri, 25 Jul 2014 05:02:13 -0400 Received: from mail-ig0-f181.google.com ([209.85.213.181]:55017 "EHLO mail-ig0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759312AbaGYJCK (ORCPT ); Fri, 25 Jul 2014 05:02:10 -0400 Date: Fri, 25 Jul 2014 02:02:07 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: Sachin Kamat cc: pramod.gurav.etc@gmail.com, linux-input@vger.kernel.org, open list , Pramod Gurav , Dmitry Torokhov , Lejun Zhu , Sachin Kamat Subject: Re: [PATCH] Input: soc_button_array: Remove kfree on data allocated with devm_zalloc In-Reply-To: Message-ID: References: <1406272180-25101-1-git-send-email-pramod.gurav@smartplayin.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 25 Jul 2014, Sachin Kamat wrote: > On Fri, Jul 25, 2014 at 12:39 PM, wrote: > > From: Pramod Gurav > > > > This patch does below: > > - Removes kfree done on data allocated with devm_zalloc in probe > > path of the driver. > > - Adds a check on return value from devm_kzalloc which was missing > > and renames a lable from err_free_mem to err_mem. > > - Adds couple of dev_err on failure to allocate memory > > > > CC: Dmitry Torokhov > > CC: Lejun Zhu > > CC: Sachin Kamat > > > > Signed-off-by: Pramod Gurav > > --- > > drivers/input/misc/soc_button_array.c | 19 ++++++++++++++----- > > 1 file changed, 14 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c > > index 5a6334b..ac82971 100644 > > --- a/drivers/input/misc/soc_button_array.c > > +++ b/drivers/input/misc/soc_button_array.c > > @@ -83,6 +83,13 @@ soc_button_device_create(struct pnp_dev *pdev, > > sizeof(*gpio_keys_pdata) + > > sizeof(*gpio_keys) * MAX_NBUTTONS, > > GFP_KERNEL); > > + if (!gpio_keys_pdata) { > > + dev_err(&pdev->dev, > > + "Can't allocate memory for gpio_keys_platform_data\n"); > > OOM message is not needed as memory subsystem will take care of it. > In the worst case, the memory subsystem will print that a process was killed for this allocation to succeed so it's never actually going to fail. However, it is indeed frowed upon to print your own oom message so you're right that it should be removed. Same comment about soc_button_pnp_probe(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/