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can: mcp251xfd: mcp251xfd_probe(): use dev_err_probe() to simplify error handling

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dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.

Link: https://lore.kernel.org/r/20210128104644.2982125-9-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2020-10-16 18:03:59 +02:00
parent dfe99ba29e
commit cf8ee6de25
1 changed files with 12 additions and 16 deletions
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28
drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
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@ -2849,32 +2849,28 @@ static int mcp251xfd_probe(struct spi_device *spi)
rx_int = devm_gpiod_get_optional(&spi->dev, "microchip,rx-int",
GPIOD_IN);
if (PTR_ERR(rx_int) == -EPROBE_DEFER)
return -EPROBE_DEFER;
else if (IS_ERR(rx_int))
return PTR_ERR(rx_int);
if (IS_ERR(rx_int))
return dev_err_probe(&spi->dev, PTR_ERR(rx_int),
"Failed to get RX-INT!\n");
reg_vdd = devm_regulator_get_optional(&spi->dev, "vdd");
if (PTR_ERR(reg_vdd) == -EPROBE_DEFER)
return -EPROBE_DEFER;
else if (PTR_ERR(reg_vdd) == -ENODEV)
if (PTR_ERR(reg_vdd) == -ENODEV)
reg_vdd = NULL;
else if (IS_ERR(reg_vdd))
return PTR_ERR(reg_vdd);
return dev_err_probe(&spi->dev, PTR_ERR(reg_vdd),
"Failed to get VDD regulator!\n");
reg_xceiver = devm_regulator_get_optional(&spi->dev, "xceiver");
if (PTR_ERR(reg_xceiver) == -EPROBE_DEFER)
return -EPROBE_DEFER;
else if (PTR_ERR(reg_xceiver) == -ENODEV)
if (PTR_ERR(reg_xceiver) == -ENODEV)
reg_xceiver = NULL;
else if (IS_ERR(reg_xceiver))
return PTR_ERR(reg_xceiver);
return dev_err_probe(&spi->dev, PTR_ERR(reg_xceiver),
"Failed to get Transceiver regulator!\n");
clk = devm_clk_get(&spi->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&spi->dev, "No Oscillator (clock) defined.\n");
return PTR_ERR(clk);
}
if (IS_ERR(clk))
dev_err_probe(&spi->dev, PTR_ERR(clk),
"Failed to get Oscillator (clock)!\n");
freq = clk_get_rate(clk);
/* Sanity check */