From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-149.synserver.de ([212.40.185.149]:1057 "EHLO smtp-out-149.synserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756423Ab3JNPHT (ORCPT ); Mon, 14 Oct 2013 11:07:19 -0400 From: Lars-Peter Clausen To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 3/3] iio:kfifo: Set update_needed to false after allocating a new buffer Date: Mon, 14 Oct 2013 17:09:10 +0200 Message-Id: <1381763350-8930-3-git-send-email-lars@metafoo.de> In-Reply-To: <1381763350-8930-1-git-send-email-lars@metafoo.de> References: <1381763350-8930-1-git-send-email-lars@metafoo.de> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org update_needed is used to decide whether the kfifo buffer needs to be re-allocated. It is set to true whenever the size of the buffer is changed. It is never set to false though, causing the buffer to always be re-allocated. Setting update_needed to false after the new buffer has been allocated fixes the problem. Signed-off-by: Lars-Peter Clausen --- drivers/iio/kfifo_buf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c index a050b18..920e383 100644 --- a/drivers/iio/kfifo_buf.c +++ b/drivers/iio/kfifo_buf.c @@ -40,6 +40,7 @@ static int iio_request_update_kfifo(struct iio_buffer *r) kfifo_free(&buf->kf); ret = __iio_allocate_kfifo(buf, buf->buffer.bytes_per_datum, buf->buffer.length); + buf->update_needed = false; } r->stufftoread = false; mutex_unlock(&buf->user_lock); -- 1.8.0