Commit 8474ddd7 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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staging:iio:ring_sw: Fix incorrect test on successful read of last value, causes infinite loop 



Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 3bf877c1

drivers/staging/iio/ring_sw.c

+1 −1
Original line number Diff line number Diff line
@@ -295,7 +295,7 @@ int iio_read_last_from_sw_ring(struct iio_sw_ring_buffer *ring, 
		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);