Re: [PATCH] gpiolib: cdev: convert stream-like files from

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Sun, Feb 7, 2021 at 10:00 AM Yang Li <yang.lee@xxxxxxxxxxxxxxxxx> wrote:

> Eliminate the following coccicheck warning:
> ./drivers/gpio/gpiolib-cdev.c:2307:7-23: WARNING: gpio_fileops: .read()
> has stream semantic; safe to change nonseekable_open -> stream_open.
>
> Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>

This doesn't make any sense to me.

It is pretty clear from context that this file should *not* be
seeked and it seems just dangerous to randomly allow that.
Better safe than sorry.

I don't know if the function nonseekable_open() has an unintuitive
name if it means anything else than that. I burnt myself on the FS
before.

Yours,
Linus Walleij