linux-kernel - Re: Salvator-X ravb failure with v4.5-rc3 due to irqchip power down

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20160208200430.GB1997@tetsubishi>
Date:	Mon, 8 Feb 2016 21:04:30 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	linux-renesas-soc@...r.kernel.org,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Salvator-X ravb failure with v4.5-rc3 due to irqchip power down


> The real problem is that the PHY interrupt is wired to an on-chip GPIO
> controller, which is disabled by PM Runtime if no GPIOs are in use, and
> interrupts are not taken into account (the irqchip subsystem is not (yet) PM
> Runtime aware) for GPIO use.
>
> Adding a call to
>
>     pm_runtime_get_sync(dev);
>
> to gpio_rcar_probe() fixes the problem, but keeps the GPIO modules enabled
> all the time.
>
> IIRC, we have a similar issue with HDMI on r8a7791/koelsch...

Exactly, the interrupt for 'EDID read done' never arrived because of
this.


Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)