diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index c156a30c4dec..4440867b7d20 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -2367,9 +2367,14 @@ dont_test_tx_en: * Request DMA channels for both RX and TX. */ if (up->dma) { - retval = serial8250_request_dma(up); - if (retval) { - dev_warn_ratelimited(port->dev, "failed to request DMA\n"); + const char *msg = NULL; + + if (uart_console(port)) + msg = "forbid DMA for kernel console"; + else if (serial8250_request_dma(up)) + msg = "failed to request DMA"; + if (msg) { + dev_warn_ratelimited(port->dev, "%s\n", msg); up->dma = NULL; } } |