Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1948495AbbEBTqB (ORCPT ); Sat, 2 May 2015 15:46:01 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:46484 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946991AbbEBTpz (ORCPT ); Sat, 2 May 2015 15:45:55 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ezequiel Garcia , Hans Verkuil , Mauro Carvalho Chehab Subject: [PATCH 3.14 76/92] [media] stk1160: Make sure current buffer is released Date: Sat, 2 May 2015 21:03:31 +0200 Message-Id: <20150502190117.291791684@linuxfoundation.org> X-Mailer: git-send-email 2.3.7 In-Reply-To: <20150502190109.683061482@linuxfoundation.org> References: <20150502190109.683061482@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1998 Lines: 61 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ezequiel Garcia commit aeff09276748b66072f2db2e668cec955cf41959 upstream. The available (i.e. not used) buffers are returned by stk1160_clear_queue(), on the stop_streaming() path. However, this is insufficient and the current buffer must be released as well. Fix it. Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/usb/stk1160/stk1160-v4l.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) --- a/drivers/media/usb/stk1160/stk1160-v4l.c +++ b/drivers/media/usb/stk1160/stk1160-v4l.c @@ -244,6 +244,11 @@ static int stk1160_stop_streaming(struct if (mutex_lock_interruptible(&dev->v4l_lock)) return -ERESTARTSYS; + /* + * Once URBs are cancelled, the URB complete handler + * won't be running. This is required to safely release the + * current buffer (dev->isoc_ctl.buf). + */ stk1160_cancel_isoc(dev); /* @@ -624,8 +629,16 @@ void stk1160_clear_queue(struct stk1160 stk1160_info("buffer [%p/%d] aborted\n", buf, buf->vb.v4l2_buf.index); } - /* It's important to clear current buffer */ - dev->isoc_ctl.buf = NULL; + + /* It's important to release the current buffer */ + if (dev->isoc_ctl.buf) { + buf = dev->isoc_ctl.buf; + dev->isoc_ctl.buf = NULL; + + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + stk1160_info("buffer [%p/%d] aborted\n", + buf, buf->vb.v4l2_buf.index); + } spin_unlock_irqrestore(&dev->buf_lock, flags); } -- 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/