On Tue, 2019-08-06 at 15:07 -0700, Stephen Boyd wrote: > We want to use most of the code in this driver, except we want to modify > the flow control and idle behavior. Let's "libify" this driver so that > another driver can call the code in here and slightly tweak the > behavior. Neither "libifying" nor "slightly tweaking" gives an idea what the commit does. A great commit message should be in imperative form describe what it does and why in as plain english as possible. Often commit messages are seen just as a necessary bad and not much energy is spent on them but for a maitainer solid commit messages have an indispensable value. > + void (*pre_transfer)(struct tpm_tis_spi_phy *phy); Adding a new calback should be a commit of its own. /Jarkko