From 708706ff290545decbb7f43b533cb247e8ff64fd Mon Sep 17 00:00:00 2001 From: Peter Meerwald Date: Fri, 22 Jun 2012 09:47:41 +0200 Subject: [PATCH] staging: iio: fix trigger handler of iio_simple_dummy driver accessing first and last channel fails: fakedata[0] is never accessed, out-of-bound access for last channel Signed-off-by: Peter Meerwald Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/iio_simple_dummy_buffer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/iio_simple_dummy_buffer.c b/drivers/staging/iio/iio_simple_dummy_buffer.c index fa4939c..d911960 100644 --- a/drivers/staging/iio/iio_simple_dummy_buffer.c +++ b/drivers/staging/iio/iio_simple_dummy_buffer.c @@ -75,9 +75,9 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p) for (i = 0, j = 0; i < bitmap_weight(indio_dev->active_scan_mask, indio_dev->masklength); - i++) { + i++, j++) { j = find_next_bit(buffer->scan_mask, - indio_dev->masklength, j + 1); + indio_dev->masklength, j); /* random access read from the 'device' */ data[i] = fakedata[j]; len += 2; -- 2.7.4