From 0a2784233785226fe5882c8af15118476f89e98e Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Fri, 25 Apr 2008 04:36:47 +0800 Subject: 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 Signed-off-by: Bryan Wu --- drivers/serial/bfin_5xx.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index 47ca7b0267d..5f55534a290 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; } -- cgit v1.2.3