diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2008-04-25 04:36:47 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-04-25 04:36:47 +0800 |
| commit | 0a2784233785226fe5882c8af15118476f89e98e (patch) | |
| tree | 4c7a3fd55bb719822d9fdf703356f1a619ac6560 | |
| parent | 50e2e15afaac59c955f43d78d0a1e53cf8a76370 (diff) | |
| download | linux-0a2784233785226fe5882c8af15118476f89e98e.tar.bz2 | |
Blackfin Serial Driver: fix bug - use mod_timer to replace only add_timer.
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=4045
If adding timer in both timer handler and rx interrupt, a timer may be
added when it is till in the pending list.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
| -rw-r--r-- | drivers/serial/bfin_5xx.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index 47ca7b0267df..5f55534a290b 100644 --- a/drivers/serial/bfin_5xx.c +++ b/drivers/serial/bfin_5xx.c @@ -506,8 +506,7 @@ void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) uart->rx_dma_buf.tail = uart->rx_dma_buf.head; } - uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES; - add_timer(&(uart->rx_dma_timer)); + mod_timer(&(uart->rx_dma_timer), jiffies + DMA_RX_FLUSH_JIFFIES); } static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id) @@ -550,9 +549,7 @@ static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id) clear_dma_irqstat(uart->rx_dma_channel); spin_unlock(&uart->port.lock); - del_timer(&(uart->rx_dma_timer)); - uart->rx_dma_timer.expires = jiffies; - add_timer(&(uart->rx_dma_timer)); + mod_timer(&(uart->rx_dma_timer), jiffies); return IRQ_HANDLED; } |