diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_mid.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_mid.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c index 339de9cd0866..39c2324484dd 100644 --- a/drivers/tty/serial/8250/8250_mid.c +++ b/drivers/tty/serial/8250/8250_mid.c @@ -99,27 +99,27 @@ static int dnv_handle_irq(struct uart_port *p) struct uart_8250_port *up = up_to_u8250p(p); unsigned int fisr = serial_port_in(p, INTEL_MID_UART_DNV_FISR); u32 status; - int ret = IRQ_NONE; + int ret = 0; int err; if (fisr & BIT(2)) { err = hsu_dma_get_status(&mid->dma_chip, 1, &status); if (err > 0) { serial8250_rx_dma_flush(up); - ret |= IRQ_HANDLED; + ret |= 1; } else if (err == 0) ret |= hsu_dma_do_irq(&mid->dma_chip, 1, status); } if (fisr & BIT(1)) { err = hsu_dma_get_status(&mid->dma_chip, 0, &status); if (err > 0) - ret |= IRQ_HANDLED; + ret |= 1; else if (err == 0) ret |= hsu_dma_do_irq(&mid->dma_chip, 0, status); } if (fisr & BIT(0)) ret |= serial8250_handle_irq(p, serial_port_in(p, UART_IIR)); - return ret; + return IRQ_RETVAL(ret); } #define DNV_DMA_CHAN_OFFSET 0x80 @@ -168,6 +168,9 @@ static void mid8250_set_termios(struct uart_port *p, unsigned long w = BIT(24) - 1; unsigned long mul, div; + /* Gracefully handle the B0 case: fall back to B9600 */ + fuart = fuart ? fuart : 9600 * 16; + if (mid->board->freq < fuart) { /* Find prescaler value that satisfies Fuart < Fref */ if (mid->board->freq > baud) |
