Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755374Ab3H1Lnx (ORCPT ); Wed, 28 Aug 2013 07:43:53 -0400 Received: from eusmtp01.atmel.com ([212.144.249.242]:30598 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755338Ab3H1Lnv (ORCPT ); Wed, 28 Aug 2013 07:43:51 -0400 From: Rupesh Gujare To: CC: , , , , Subject: [v2 PATCH 3/3] staging: ozwpan: Return error, if PD is not connected. Date: Wed, 28 Aug 2013 12:43:16 +0100 Message-ID: <1377690196-4516-3-git-send-email-rupesh.gujare@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1377690196-4516-1-git-send-email-rupesh.gujare@atmel.com> References: <1377690196-4516-1-git-send-email-rupesh.gujare@atmel.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.161.30.18] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 934 Lines: 28 Return error if we receive write(), while PD is not connected. Signed-off-by: Rupesh Gujare --- drivers/staging/ozwpan/ozcdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c index 50722ea..6ccb64f 100644 --- a/drivers/staging/ozwpan/ozcdev.c +++ b/drivers/staging/ozwpan/ozcdev.c @@ -162,6 +162,8 @@ static ssize_t oz_cdev_write(struct file *filp, const char __user *buf, spin_unlock_bh(&g_cdev.lock); if (pd == NULL) return -ENXIO; + if (!(pd->state & OZ_PD_S_CONNECTED)) + return -EAGAIN; eb = &pd->elt_buff; ei = oz_elt_info_alloc(eb); if (ei == NULL) { -- 1.7.9.5 -- 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/