From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lars-Peter Clausen , Jonathan Cameron Subject: [PATCH 3.10 079/123] staging:iio:ade7758: Fix check if channels are enabled in prenable Date: Wed, 12 Nov 2014 10:17:25 +0900 Message-Id: <20141112011722.590030567@linuxfoundation.org> In-Reply-To: <20141112011718.985171261@linuxfoundation.org> References: <20141112011718.985171261@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lars-Peter Clausen commit 79fa64eb2ee8ccb4bcad7f54caa2699730b10b22 upstream. We should check if a channel is enabled, not if no channels are enabled. Fixes: 550268ca1111 ("staging:iio: scrap scan_count and ensure all drivers use active_scan_mask") Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/meter/ade7758_ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/iio/meter/ade7758_ring.c +++ b/drivers/staging/iio/meter/ade7758_ring.c @@ -92,7 +92,7 @@ static int ade7758_ring_preenable(struct unsigned channel; int ret; - if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) + if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) return -EINVAL; ret = iio_sw_buffer_preenable(indio_dev);