| Message ID | 1440180177-6924-34-git-send-email-geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index ffcbf6eaf5f98723..d8b73e791a554823 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1467,10 +1467,11 @@ static void work_fn_rx(struct work_struct *work) dev_dbg(port->dev, "Read %u bytes with cookie %d\n", read, s->active_rx); - count = sci_dma_rx_push(s, s->rx_buf[new], read); - - if (count) - tty_flip_buffer_push(&port->state->port); + if (read) { + count = sci_dma_rx_push(s, s->rx_buf[new], read); + if (count) + tty_flip_buffer_push(&port->state->port); + } spin_unlock_irqrestore(&port->lock, flags);
On receive DMA time-out, avoid calling sci_dma_rx_push() if no data was transferred by the timed out DMA request. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- v3: - New. --- drivers/tty/serial/sh-sci.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)