serial: fsl_lpuart: Change DMA failure messages to debug level

Currently the following messages are seen when booting i.MX8QXP:

fsl-lpuart 5a060000.serial: DMA tx channel request failed, operating without tx DMA (-19)
fsl-lpuart 5a060000.serial: DMA rx channel request failed, operating without rx DMA (-19)

It is not really useful to have such messages on every boot, so change
them to debug level instead.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20200416153453.18825-1-festevam@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index dba730d..6a9909e 100644 (file)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1512,17 +1512,17 @@ static void lpuart_request_dma(struct lpuart_port *sport)
 {
        sport->dma_tx_chan = dma_request_chan(sport->port.dev, "tx");
        if (IS_ERR(sport->dma_tx_chan)) {
-               dev_info_once(sport->port.dev,
-                             "DMA tx channel request failed, operating without tx DMA (%ld)\n",
-                             PTR_ERR(sport->dma_tx_chan));
+               dev_dbg_once(sport->port.dev,
+                            "DMA tx channel request failed, operating without tx DMA (%ld)\n",
+                            PTR_ERR(sport->dma_tx_chan));
                sport->dma_tx_chan = NULL;
        }
 
        sport->dma_rx_chan = dma_request_chan(sport->port.dev, "rx");
        if (IS_ERR(sport->dma_rx_chan)) {
-               dev_info_once(sport->port.dev,
-                             "DMA rx channel request failed, operating without rx DMA (%ld)\n",
-                             PTR_ERR(sport->dma_rx_chan));
+               dev_dbg_once(sport->port.dev,
+                            "DMA rx channel request failed, operating without rx DMA (%ld)\n",
+                            PTR_ERR(sport->dma_rx_chan));
                sport->dma_rx_chan = NULL;
        }
 }