Re: [PATCH v1 2/2] regulator: rt6245: Add support for Richtek RT6245

[Mark Brown]

On Wed, May 26, 2021 at 02:12:58PM +0800, cy_huang wrote:

> +	/* xor checksum for bit 6 to 0 */
> +	bit_count = __sw_hweight8(code & RT6245_CODE_MASK);

This doesn't compile with an x86 allmodconfig:

ERROR: modpost: "__sw_hweight8" [drivers/regulator/rt6245-regulator.ko] undefined!

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