Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755817AbZLINXb (ORCPT ); Wed, 9 Dec 2009 08:23:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755659AbZLINX3 (ORCPT ); Wed, 9 Dec 2009 08:23:29 -0500 Received: from mgw2.diku.dk ([130.225.96.92]:58645 "EHLO mgw2.diku.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755539AbZLINX2 (ORCPT ); Wed, 9 Dec 2009 08:23:28 -0500 Date: Wed, 9 Dec 2009 14:23:32 +0100 (CET) From: Julia Lawall To: David Brownell , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] drivers/usb/gadget: Use ERR_PTR/IS_ERR Message-ID: 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 Content-Length: 1885 Lines: 63 From: Julia Lawall Use ERR_PTR and IS_ERR rather than mixing integers and pointers. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression *E; @@ * E < 0 // Signed-off-by: Julia Lawall --- drivers/usb/gadget/f_audio.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c index c43c89f..0f2eee1 100644 --- a/drivers/usb/gadget/f_audio.c +++ b/drivers/usb/gadget/f_audio.c @@ -252,12 +252,12 @@ static struct f_audio_buf *f_audio_buffer_alloc(int buf_size) copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC); if (!copy_buf) - return (struct f_audio_buf *)-ENOMEM; + return ERR_PTR(-ENOMEM); copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC); if (!copy_buf->buf) { kfree(copy_buf); - return (struct f_audio_buf *)-ENOMEM; + return ERR_PTR(-ENOMEM); } return copy_buf; @@ -332,7 +332,7 @@ static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req) list_add_tail(©_buf->list, &audio->play_queue); schedule_work(&audio->playback_work); copy_buf = f_audio_buffer_alloc(audio_buf_size); - if (copy_buf < 0) + if (IS_ERR(copy_buf)) return -ENOMEM; } @@ -576,6 +576,8 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) usb_ep_enable(out_ep, audio->out_desc); out_ep->driver_data = audio; audio->copy_buf = f_audio_buffer_alloc(audio_buf_size); + if (IS_ERR(audio->copy_buf)) + return -ENOMEM; /* * allocate a bunch of read buffers -- 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/