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| author | David S. Miller <davem@davemloft.net> | 2011-07-05 23:23:37 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-05 23:23:37 -0700 |
| commit | e12fe68ce34d60c04bb1ddb1d3cc5c3022388fe4 (patch) | |
| tree | 83c0e192ccaa4752c80b6131a7d0aa8272b5d0d0 /drivers/tty/serial/bcm63xx_uart.c | |
| parent | 7329f0d58de01878d9ce4f0be7a76e136f223eef (diff) | |
| parent | 712ae51afd55b20c04c5383d02ba5d10233313b1 (diff) | |
| download | linux-e12fe68ce34d60c04bb1ddb1d3cc5c3022388fe4.tar.gz | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'drivers/tty/serial/bcm63xx_uart.c')
| -rw-r--r-- | drivers/tty/serial/bcm63xx_uart.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c index a1a0e55d0807..c0b68b9cad91 100644 --- a/drivers/tty/serial/bcm63xx_uart.c +++ b/drivers/tty/serial/bcm63xx_uart.c @@ -250,6 +250,20 @@ static void bcm_uart_do_rx(struct uart_port *port) /* get overrun/fifo empty information from ier * register */ iestat = bcm_uart_readl(port, UART_IR_REG); + + if (unlikely(iestat & UART_IR_STAT(UART_IR_RXOVER))) { + unsigned int val; + + /* fifo reset is required to clear + * interrupt */ + val = bcm_uart_readl(port, UART_CTL_REG); + val |= UART_CTL_RSTRXFIFO_MASK; + bcm_uart_writel(port, val, UART_CTL_REG); + + port->icount.overrun++; + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } + if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY))) break; @@ -284,10 +298,6 @@ static void bcm_uart_do_rx(struct uart_port *port) if (uart_handle_sysrq_char(port, c)) continue; - if (unlikely(iestat & UART_IR_STAT(UART_IR_RXOVER))) { - port->icount.overrun++; - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } if ((cstat & port->ignore_status_mask) == 0) tty_insert_flip_char(tty, c, flag); |