linux-kernel - Re: [PATCH 15/17] gpio: omap: Convert to immutable irq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Y+8xkV5aUrAajLNP@atomide.com>
Date:   Fri, 17 Feb 2023 09:49:37 +0200
From:   Tony Lindgren <tony@...mide.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Mun Yew Tham <mun.yew.tham@...el.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, Alban Bedel <albeu@...e.fr>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Jay Fang <f.fangjian@...wei.com>,
        Daniel Palmer <daniel@...ngy.jp>,
        Romain Perier <romain.perier@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        William Breathitt Gray <william.gray@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-omap@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>
Subject: Re: [PATCH 15/17] gpio: omap: Convert to immutable irq_chip

Hi,

* Linus Walleij <linus.walleij@...aro.org> [230216 09:38]:
> 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?

Reviewed-by: Tony Lindgren <tony@...mide.com>
Tested-by: Tony Lindgren <tony@...mide.com>