On Tue, May 29, 2018 at 02:49:02PM +0300, Oleksandr Shamray wrote: > +static int jtag_release(struct inode *inode, struct file *file) > +{ > + return 0; > +} If you do not do anything, then there is no need to have this callback at all, right? > +/** > + * enum jtag_endstate: > + * > + * @JTAG_STATE_IDLE: JTAG state machine IDLE state > + * @JTAG_STATE_PAUSEIR: JTAG state machine PAUSE_IR state > + * @JTAG_STATE_PAUSEDR: JTAG state machine PAUSE_DR state > + */ > +enum jtag_endstate { > + JTAG_STATE_IDLE, > + JTAG_STATE_PAUSEIR, > + JTAG_STATE_PAUSEDR, Be specific with these enums, set them to a value so you know all is good. Userspace C compilers can be funny at times. Otherwise, looks really good, nice work. greg k-h -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html