diff options
| author | Huang Shijie <b32955@freescale.com> | 2011-12-05 18:53:47 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:18:31 +0800 |
| commit | f872dc1ad803c0e01377429da5455956dbb0972c (patch) | |
| tree | 0b1bfd59af7a1dc71b140b8cf18ed2f982476ef8 /drivers/tty | |
| parent | 942ceecfa98998e5775ea6f5beede34f1e5465d6 (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>
Diffstat (limited to 'drivers/tty')
| -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 b9e169417c7b..f31fa1e16ca7 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -741,7 +741,9 @@ 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); } /* |