From: Jonathan Cameron Date: Tue, 4 May 2010 13:43:11 +0000 (+0100) Subject: staging:iio:ring_sw: Fix incorrect test on successful read of last value, causes... X-Git-Tag: MMI-PSA29.97-13-9~23841^2^2~236 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8474ddd7cba04c2e8d8691abda32ae0f4a684137;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git staging:iio:ring_sw: Fix incorrect test on successful read of last value, causes infinite loop Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c index f8de45dc4b6e..5ee3e4533515 100644 --- a/drivers/staging/iio/ring_sw.c +++ b/drivers/staging/iio/ring_sw.c @@ -295,7 +295,7 @@ 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);