[PATCH 03/10] spi: cadence-xspi: Use FIELD_MODIFY()

[Mark Brown]

On Thu, Apr 30, 2026 at 11:54:49PM +0800, Hans Zhang wrote:
>  		writel(clk_reg,
>  		       cdns_xspi->auxbase + MRVL_XSPI_CLK_CTRL_AUX_REG);
>  		clk_reg = FIELD_PREP(MRVL_XSPI_CLK_DIV, i);
> -		clk_reg &= ~MRVL_XSPI_CLK_DIV;
> -		clk_reg |= FIELD_PREP(MRVL_XSPI_CLK_DIV, i);
> +		FIELD_MODIFY(MRVL_XSPI_CLK_DIV, &clk_reg, i);
>  		clk_reg |= MRVL_XSPI_CLK_ENABLE;
>  		clk_reg |= MRVL_XSPI_IRQ_ENABLE;
>  		update_clk = true;

The existing code is a bit weird here, we could just delete the
modification entirely AFAICT.
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