This fixes bug when only first chunk of a large message split by hbuf_max_len is written to the hardware. All the consequent chunks will not get a new credit.
A regression introduced by the commit 0ef319c93cebff9f82bdd0cdbb298f2dd00acda8 mei: streamline write complete flow function Signed-off-by: Tomas Winkler <[email protected]> --- drivers/misc/mei/interrupt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 7473071..5ee2f07 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -356,13 +356,14 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots, return -ENODEV; } - if (mei_cl_flow_ctrl_reduce(cl)) - return -ENODEV; cl->status = 0; cb->buf_idx += mei_hdr.length; - if (mei_hdr.msg_complete) + if (mei_hdr.msg_complete) { + if (mei_cl_flow_ctrl_reduce(cl)) + return -ENODEV; list_move_tail(&cb->list, &dev->write_waiting_list.list); + } return 0; } -- 1.8.1.2 -- 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/
