Thread (29 messages) 29 messages, 7 authors, 2023-03-06

Re: [PATCH 15/17] gpio: omap: Convert to immutable irq_chip

From: Tony Lindgren <tony@atomide.com>
Date: 2023-03-06 07:31:32
Also in: linux-aspeed, linux-gpio, linux-omap, lkml

* Tony Lindgren [off-list ref] [230306 07:28]:
* Andreas Kemnade [off-list ref] [230217 16:31]:
quoted
On Fri, 17 Feb 2023 09:49:37 +0200
Tony Lindgren [off-list ref] wrote:
quoted
Hi,

* Linus Walleij [off-list ref] [230216 09:38]:
quoted
Convert the driver to immutable irq-chip with a bit of
intuition.

This driver require some special care: .irq_ack() was copied
from dummy_irq_chip where it was defined as noop. This only
makes sense if using handle_edge_irq() that will unconditionally
call .irq_ack() to avoid a crash, but this driver is not ever
using handle_edge_irq() so just avoid assigning .irq_ack().

A separate chip had to be created for the non-wakeup instance.  
Nice, works for me.

BTW, I still see these warnings remaining on boot:

gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.

Seems like we might be able to get rid of those too now or are
there still some dependencies with /sys/class/gpio for example?
on what are you testing? on -next? I thought I have fixed theese warning with
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=92bf78b33b0b463b00c6b0203b49aea845daecc8
You're right, sorry looks like I pasted the wrong line from the dmesg
output :)

I intended to paste this example instead of the static allocation line:

gpio gpiochip1: (gpio-32-63): not an immutable chip, please consider fixing it!
Hmm, nope, sorry it seems I was just confused between two patches.
Hopefully all the gpio warnings will be gone with this $subject patch
applied.

Regards,

Tony

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