Messages in this thread | | | From | Linus Walleij <> | Date | Mon, 29 May 2023 11:07:56 +0200 | Subject | Re: [PATCH] gpiolib: Avoid side effects in gpio_is_visible() |
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On Wed, May 17, 2023 at 12:19 AM Chris Packham <Chris.Packham@alliedtelesis.co.nz> wrote: > On 17/05/23 01:57, Linus Walleij wrote: > > On Mon, May 15, 2023 at 12:27 AM Chris Packham > > <Chris.Packham@alliedtelesis.co.nz> wrote:
> >> The crux of the problem is that the irq_desc is created when it hasn't > >> been requested.
> > The right solution to me seems to be to not use gpiod_export() > > and not use sysfs TBH. > > That's not really a feasible solution. I'm dealing with application code > that has been happily using the sysfs interface for many years.
I wonder how many years.
The GPIO sysfs has been deprecated for seven years: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/Documentation/ABI/obsolete/sysfs-gpio?id=fe95046e960b4b76e73dc1486955d93f47276134
My fear is that deprecation is ignored and people still develop stuff like this ignoring the fact that the ABI is deprecated.
Yours, Linus Walleij
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