From patchwork Fri Dec 4 09:06:24 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Reid X-Patchwork-Id: 552624 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4B9B61402DD for ; Fri, 4 Dec 2015 20:16:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755813AbbLDJQJ (ORCPT ); Fri, 4 Dec 2015 04:16:09 -0500 Received: from 203-59-230-133.perm.iinet.net.au ([203.59.230.133]:52064 "EHLO preid-centos7.electromag.com.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755625AbbLDJQE (ORCPT ); Fri, 4 Dec 2015 04:16:04 -0500 Received: by preid-centos7.electromag.com.au (Postfix, from userid 1000) id 9DA1733BFD7F2; Fri, 4 Dec 2015 17:06:27 +0800 (AWST) From: Phil Reid To: gnurou@gmail.com, linux-gpio@vger.kernel.org Cc: Phil Reid Subject: [PATCH 1/2] gpiolib: prevent fault 'Unable to handle kernel paging request at virtual address' Date: Fri, 4 Dec 2015 17:06:24 +0800 Message-Id: <1449219985-67261-2-git-send-email-preid@electromag.com.au> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1449219985-67261-1-git-send-email-preid@electromag.com.au> References: <1449219985-67261-1-git-send-email-preid@electromag.com.au> Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org gpiod_request when gpio returns -EBUSY results in fault. Changing to pr_warn fixes the problem. Signed-off-by: Phil Reid --- drivers/gpio/gpiolib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a18f00f..0ef01b8 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -961,7 +961,7 @@ int gpiod_request(struct gpio_desc *desc, const char *label) done: if (status) - gpiod_dbg(desc, "%s: status %d\n", __func__, status); + pr_warn("%s: status %d\n", __func__, status); return status; }