[PATCH 17/19] staging:iio:ring_sw: Fix incorrect test on successful read of last value, causes infinite loop

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Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxx>
---
 drivers/staging/iio/ring_sw.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c
index 4e5134c..8d2f7cd 100644
--- a/drivers/staging/iio/ring_sw.c
+++ b/drivers/staging/iio/ring_sw.c
@@ -297,7 +297,7 @@ 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);
-- 
1.6.4.4

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