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| author | Markus Schneider-Pargmann <msp@baylibre.com> | 2023-07-28 16:19:23 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2023-07-31 10:41:09 +0200 |
| commit | 35e7aaab3e0058dba3eaf082c3f1ccee96c20b1c (patch) | |
| tree | 0377b76897a20c3e550b4cb6040257769cdb0156 | |
| parent | 142c6dc6d9d7c27157e41985519464d5985e3d95 (diff) | |
| download | lwn-35e7aaab3e0058dba3eaf082c3f1ccee96c20b1c.tar.gz lwn-35e7aaab3e0058dba3eaf082c3f1ccee96c20b1c.zip | |
can: tcan4x5x: Add error messages in probe
To be able to understand issues during probe easier, add error messages
if something fails.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20230728141923.162477-7-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/m_can/tcan4x5x-core.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c index 2d329b4e4f52..8a4143809d33 100644 --- a/drivers/net/can/m_can/tcan4x5x-core.c +++ b/drivers/net/can/m_can/tcan4x5x-core.c @@ -402,6 +402,8 @@ static int tcan4x5x_can_probe(struct spi_device *spi) /* Sanity check */ if (freq < 20000000 || freq > TCAN4X5X_EXT_CLK_DEF) { + dev_err(&spi->dev, "Clock frequency is out of supported range %d\n", + freq); ret = -ERANGE; goto out_m_can_class_free_dev; } @@ -420,16 +422,23 @@ static int tcan4x5x_can_probe(struct spi_device *spi) /* Configure the SPI bus */ spi->bits_per_word = 8; ret = spi_setup(spi); - if (ret) + if (ret) { + dev_err(&spi->dev, "SPI setup failed %pe\n", ERR_PTR(ret)); goto out_m_can_class_free_dev; + } ret = tcan4x5x_regmap_init(priv); - if (ret) + if (ret) { + dev_err(&spi->dev, "regmap init failed %pe\n", ERR_PTR(ret)); goto out_m_can_class_free_dev; + } ret = tcan4x5x_power_enable(priv->power, 1); - if (ret) + if (ret) { + dev_err(&spi->dev, "Enabling regulator failed %pe\n", + ERR_PTR(ret)); goto out_m_can_class_free_dev; + } version_info = tcan4x5x_find_version(priv); if (IS_ERR(version_info)) { @@ -438,16 +447,24 @@ static int tcan4x5x_can_probe(struct spi_device *spi) } ret = tcan4x5x_get_gpios(mcan_class, version_info); - if (ret) + if (ret) { + dev_err(&spi->dev, "Getting gpios failed %pe\n", ERR_PTR(ret)); goto out_power; + } ret = tcan4x5x_init(mcan_class); - if (ret) + if (ret) { + dev_err(&spi->dev, "tcan initialization failed %pe\n", + ERR_PTR(ret)); goto out_power; + } ret = m_can_class_register(mcan_class); - if (ret) + if (ret) { + dev_err(&spi->dev, "Failed registering m_can device %pe\n", + ERR_PTR(ret)); goto out_power; + } netdev_info(mcan_class->net, "TCAN4X5X successfully initialized.\n"); return 0; |