If wait_for_completion_interruptible_timeout returns a positive value it may be propagated as the return value of _dln2_transfer. This contradicts the documentation of the function and exposes unnecessary internals to the callers.
This patch makes sure to set the return value to 0 in that case. Reported-by: Julia Lawall <[email protected]> Signed-off-by: Octavian Purdila <[email protected]> --- drivers/mfd/dln2.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c index 9765a17..cf22841 100644 --- a/drivers/mfd/dln2.c +++ b/drivers/mfd/dln2.c @@ -462,6 +462,8 @@ static int _dln2_transfer(struct dln2_dev *dln2, u16 handle, u16 cmd, if (!ret) ret = -ETIMEDOUT; goto out_free_rx_slot; + } else { + ret = 0; } if (dln2->disconnect) { @@ -484,10 +486,8 @@ static int _dln2_transfer(struct dln2_dev *dln2, u16 handle, u16 cmd, goto out_free_rx_slot; } - if (!ibuf) { - ret = 0; + if (!ibuf) goto out_free_rx_slot; - } if (*ibuf_len > rsp->hdr.size - sizeof(*rsp)) *ibuf_len = rsp->hdr.size - sizeof(*rsp); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
