diff options
| author | Huang Shijie <b32955@freescale.com> | 2011-12-05 18:53:47 +0800 |
|---|---|---|
| committer | Huang Shijie <b32955@freescale.com> | 2011-12-05 19:01:30 +0800 |
| commit | b92265a274f0fec27567e86b995424ef8823499f (patch) | |
| tree | cd17fd923853ba824f1d0f7bda8edf0fadcf8c7c | |
| parent | d04b6aa162334fffb09bd25f8a19a1832af42ee6 (diff) | |
ENGR00169433 IMX/UART : fix a bug in UART RX
The origin code did not check the running situation.
It will cause a NULL pointer issue.
This patch fixes it.
Signed-off-by: Huang Shijie <b32955@freescale.com>
| -rw-r--r-- | drivers/tty/serial/imx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 0a90122fe6db..094ce699f9eb 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -743,7 +743,9 @@ static void dma_rx_work(struct work_struct *w) tty_flip_buffer_push(tty); sport->rx_bytes = 0; } - start_rx_dma(sport); + + if (sport->dma_is_rxing) + start_rx_dma(sport); } /* |