Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753565AbcJKKQy (ORCPT ); Tue, 11 Oct 2016 06:16:54 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:56808 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752835AbcJKKLj (ORCPT ); Tue, 11 Oct 2016 06:11:39 -0400 From: Mauro Carvalho Chehab To: Linux Media Mailing List Cc: Mauro Carvalho Chehab , Mauro Carvalho Chehab , Andy Lutomirski , Johannes Stezenbach , Jiri Kosina , Patrick Boettcher , Linux Kernel Mailing List , Andy Lutomirski , Michael Krufky , Mauro Carvalho Chehab , =?UTF-8?q?J=C3=B6rg=20Otte?= , Olli Salonen Subject: [PATCH v2 22/31] pctv452e: don't call BUG_ON() on non-fatal error Date: Tue, 11 Oct 2016 07:09:37 -0300 Message-Id: <309c127fc9502dbe901a66c184b1041a3ba3cfef.1476179975.git.mchehab@s-opensource.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 977 Lines: 31 There are some conditions on this driver that are tested with BUG_ON() with are not serious enough to hang a machine. So, just return an error if this happens. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb/pctv452e.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/usb/dvb-usb/pctv452e.c b/drivers/media/usb/dvb-usb/pctv452e.c index 58b685094904..7ad0006c5ae0 100644 --- a/drivers/media/usb/dvb-usb/pctv452e.c +++ b/drivers/media/usb/dvb-usb/pctv452e.c @@ -109,9 +109,10 @@ static int tt3650_ci_msg(struct dvb_usb_device *d, u8 cmd, u8 *data, unsigned int rlen; int ret; - BUG_ON(NULL == data && 0 != (write_len | read_len)); - BUG_ON(write_len > 64 - 4); - BUG_ON(read_len > 64 - 4); + if (!data || (write_len > 64 - 4) || (read_len > 64 - 4)) { + err("%s: transfer data invalid", __func__); + return -EIO; + }; mutex_lock(&state->ca_mutex); id = state->c++; -- 2.7.4