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] [thread-next>] [day] [month] [year] [list]
Message-ID: <aOO74D2XW47aDZlg@tom-desktop>
Date: Mon, 6 Oct 2025 14:53:52 +0200
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: Mark Brown <broonie@...nel.org>
Cc: tomm.merciai@...il.com, linux-renesas-soc@...r.kernel.org,
	biju.das.jz@...renesas.com,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>, linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/18] regulator: devres: Disable exclusive regulator
 before releasing

Hi Mark,
Thanks for your comment.

On Mon, Oct 06, 2025 at 12:52:29PM +0100, Mark Brown wrote:
> On Fri, Oct 03, 2025 at 07:33:25PM +0200, Tommaso Merciai wrote:
> > On Thu, Oct 02, 2025 at 05:29:19PM +0100, Mark Brown wrote:
> 
> > I will need to move the refcounting handlingfor the exclusive regulator
> > at USB driver lvl.
> > The drivers/phy/renesas/phy-rcar-gen3-usb2.c is using
> > regulator_hardware_enable() for some USB otg channel. I think this is
> > the reason why I need this patch to handle multiple unbind/bind.
> > Without this I'm getting some WARN_ON(regulator->enable_count) doing
> > multiple unbind/bind.
> 
> Are you sure it's not just that the driver doesn't always disable the
> regulator before unbinding?  It only disables in the power off callback
> so might leave a dangling reference behind.

Yep you are right.
I will fix that in v2 dropping this unnecessary patch.

Thanks & Regards,
Tommaso


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ