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spi: dw: Set default value if reg-io-width isn't specified

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According to the dt-bindings, the default value of reg-io-width is 4.
However, the value becomes zero when reg-io-width isn't specified.

Should set the actual value to dws->reg_io_width, considering it
referenced.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230807001621.196776-1-hayashi.kunihiko@socionext.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kunihiko Hayashi 2023-08-07 09:16:21 +09:00 committed by Mark Brown
parent f9a798867b
commit 2ca03ecc9c
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 1 deletions
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4
drivers/spi/spi-dw-mmio.c
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@ -369,7 +369,9 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
dws->max_freq = clk_get_rate(dwsmmio->clk);
device_property_read_u32(&pdev->dev, "reg-io-width", &dws->reg_io_width);
if (device_property_read_u32(&pdev->dev, "reg-io-width",
&dws->reg_io_width))
dws->reg_io_width = 4;
num_cs = 4;