From 4845187b39b79e3c1d4474c2767ddc7fb493eb05 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron <jic23@cam.ac.uk> Date: Tue, 30 Mar 2010 17:45:04 +0100 Subject: staging: iio: ring_sw: Fix incorrect test on successful read of last value, causes infinite loop This is a bad one. The test means that almost no reads of the last value ever succeed! Result is an infinite loop. Another one for the 'oops' category. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/staging/iio/ring_sw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c index b104c3d9c35e..cf22c091668c 100644 --- a/drivers/staging/iio/ring_sw.c +++ b/drivers/staging/iio/ring_sw.c @@ -293,7 +293,7 @@ again: return -EAGAIN; memcpy(data, last_written_p_copy, ring->buf.bpd); - if (unlikely(ring->last_written_p >= last_written_p_copy)) + if (unlikely(ring->last_written_p != last_written_p_copy)) goto again; iio_unmark_sw_rb_in_use(&ring->buf); -- cgit v1.2.3-70-g09d2