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iio: kfifo: Set update_needed to false only if a buffer was allocated

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Check whether the allocation of a new kfifo buffer failed or not before
setting the update_needed flag to false. This will make
iio_request_update_kfifo() try to allocate a new buffer the next time a
buffer update is requested.

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Gabriele Mazzotta 2015-05-02 14:31:16 +02:00 • committed by Jonathan Cameron
parent 0e81bc99a0
commit e5f1efb9ae
1 changed files with 2 additions and 1 deletions
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3
drivers/iio/kfifo_buf.c
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@ -38,7 +38,8 @@ static int iio_request_update_kfifo(struct iio_buffer *r)
kfifo_free(&buf->kf); kfifo_free(&buf->kf);
ret = __iio_allocate_kfifo(buf, buf->buffer.bytes_per_datum, ret = __iio_allocate_kfifo(buf, buf->buffer.bytes_per_datum,
buf->buffer.length); buf->buffer.length);
buf->update_needed = false; if (ret >= 0)
buf->update_needed = false;
} else { } else {
kfifo_reset_out(&buf->kf); kfifo_reset_out(&buf->kf);
} }