From f5b81ddd12da71bd00b2963203c23ff929e0c182 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 18 Jun 2012 18:33:47 +0200 Subject: [PATCH] iio: iio_buffer_register: Skip channels with negative scan index It is not always the case that all channels can be used in buffered mode. This patch allows channels, which can not be used in buffered mode, to set their scan index to a negative number, which will cause iio_buffer_register to ignore the channel. Signed-off-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/industrialio-buffer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 2f35db93cdb6..3d8d187eef2a 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -285,6 +285,9 @@ int iio_buffer_register(struct iio_dev *indio_dev, if (channels) { /* new magic */ for (i = 0; i < num_channels; i++) { + if (channels[i].scan_index < 0) + continue; + /* Establish necessary mask length */ if (channels[i].scan_index > (int)indio_dev->masklength - 1) -- 2.39.2