On 07/06/2018 14:00:17+0300, Radu Pirea wrote:
> +static int at91_usart_mode_probe(struct platform_device *pdev)
> +{
> + struct mfd_cell cell;
> + u32 opmode;
This has to be initialized to AT91_USART_MODE_SERIAL...
> + int err;
> +
> + err = device_property_read_u32(&pdev->dev, "atmel,usart-mode", &opmode);
> +
because if the property is not present, then opmode will not be modified
which means it could hold the value of AT91_USART_MODE_SPI.
--
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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