spi: core: Ignore unsupported spi-[tr]x-bus-width property values

Rejecting unsupported values of spi-tx-bus-width and spi-rx-bus-width
may break compatibility with future DTs. Just ignore them, falling back
to Single SPI Transfers.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@linaro.org>
(cherry picked from commit 80874d8c9e9cbfa195572dfea46f2314098b3869)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index dbab668..3f40102 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1190,11 +1190,10 @@ static void of_register_spi_devices(struct spi_master *master)
                                spi->mode |= SPI_TX_QUAD;
                                break;
                        default:
-                               dev_err(&master->dev,
-                                       "spi-tx-bus-width %d not supported\n",
-                                       value);
-                               spi_dev_put(spi);
-                               continue;
+                               dev_warn(&master->dev,
+                                        "spi-tx-bus-width %d not supported\n",
+                                        value);
+                               break;
                        }
                }
 
@@ -1209,11 +1208,10 @@ static void of_register_spi_devices(struct spi_master *master)
                                spi->mode |= SPI_RX_QUAD;
                                break;
                        default:
-                               dev_err(&master->dev,
-                                       "spi-rx-bus-width %d not supported\n",
-                                       value);
-                               spi_dev_put(spi);
-                               continue;
+                               dev_warn(&master->dev,
+                                        "spi-rx-bus-width %d not supported\n",
+                                        value);
+                               break;
                        }
                }