Re: [PATCH v4 1/9] w1_therm: creating w1_therm.h

[Greg KH <greg@kroah.com>]

On Thu, Apr 30, 2020 at 12:59:15AM +0200, Akira Shimahara wrote:
> Creating w1_therm.h header to organize code. Organize the w1_therm.c file
> to gather hardware functions, device specific functions, interface
> functions and sysfs functions.
> 
> Signed-off-by: Akira Shimahara <akira215corp@gmail.com>
> ---
>  drivers/w1/slaves/w1_therm.c | 302 +++++++++++++++--------------------
>  drivers/w1/slaves/w1_therm.h | 138 ++++++++++++++++
>  2 files changed, 269 insertions(+), 171 deletions(-)
>  create mode 100644 drivers/w1/slaves/w1_therm.h

Wait, why is a .h file needed for just a single .c file?


<snip>

>  static ssize_t read_therm(struct device *device,


> +/** read_therm()
> + * @param sl pointer to the slave to read
> + * @param info pointer to a structure to store the read results
> + * @return 0 if success, -kernel error code otherwise
> + */
> +static ssize_t read_therm(struct device *device,
> +			struct w1_slave *sl, struct therm_info *info);
> +

Why is this function needed to be declared in this .h file?

Why is any of this needed?  For some reason I thought you needed a .h
file to make things simpler for other .c files, but if all of this is
static, it's not needed at all, right?

thanks,

greg k-h