diff options
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 04af8de8617e..4b40a5b449ee 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -314,10 +314,9 @@ static void pl011_write(unsigned int val, const struct uart_amba_port *uap, static int pl011_fifo_to_tty(struct uart_amba_port *uap) { u16 status; - unsigned int ch, flag, max_count = 256; - int fifotaken = 0; + unsigned int ch, flag, fifotaken; - while (max_count--) { + for (fifotaken = 0; fifotaken != 256; fifotaken++) { status = pl011_read(uap, REG_FR); if (status & UART01x_FR_RXFE) break; @@ -326,7 +325,6 @@ static int pl011_fifo_to_tty(struct uart_amba_port *uap) ch = pl011_read(uap, REG_DR) | UART_DUMMY_DR_RX; flag = TTY_NORMAL; uap->port.icount.rx++; - fifotaken++; if (unlikely(ch & UART_DR_ERROR)) { if (ch & UART011_DR_BE) { @@ -1482,12 +1480,10 @@ static irqreturn_t pl011_int(int irq, void *dev_id) struct uart_amba_port *uap = dev_id; unsigned long flags; unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT; - u16 imsc; int handled = 0; spin_lock_irqsave(&uap->port.lock, flags); - imsc = pl011_read(uap, REG_IMSC); - status = pl011_read(uap, REG_RIS) & imsc; + status = pl011_read(uap, REG_RIS) & uap->im; if (status) { do { check_apply_cts_event_workaround(uap); @@ -1511,7 +1507,7 @@ static irqreturn_t pl011_int(int irq, void *dev_id) if (pass_counter-- == 0) break; - status = pl011_read(uap, REG_RIS) & imsc; + status = pl011_read(uap, REG_RIS) & uap->im; } while (status != 0); handled = 1; } |