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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