On Thu, Sep 05, 2019 at 06:21:06AM -0700, Guenter Roeck wrote: > linux/bitops.h should be included when using BIT(). It's included from linux/i2c-mux.h and it compiled successfully. But if it's needed I'll update the patch and resend. Just a question - What is the best practice in such case? Should the header included explicitly? -Saiyam