diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-15 10:06:42 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-15 10:06:42 +0100 |
| commit | 4aa96ccf9ee35cdbd0d423e87a4d551019570218 (patch) | |
| tree | dca6322681df2e8f33f65c07defce24db68f645c /drivers/tty/serial/bcm63xx_uart.c | |
| parent | cb5fd904f0f14866ab76ec1f6ca3469896e4e2cf (diff) | |
| parent | 8f2ffa00fb3c05ec0659cd7b056c4e8e106072f1 (diff) | |
Merge branch 'kprobes-thumb' of git://git.yxit.co.uk/linux into devel-stable
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 a1a0e55d080..c0b68b9cad9 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); |