linux-kernel - Re: [PATCH 4/4] clk: wm831x: Add initial WM831x clock driver

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: <20120322112613.GA3852@pengutronix.de>
Date:	Thu, 22 Mar 2012 12:26:13 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/4] clk: wm831x: Add initial WM831x clock driver

On Thu, Mar 22, 2012 at 11:15:31AM +0000, Mark Brown wrote:
> On Wed, Mar 21, 2012 at 11:26:22PM +0100, Sascha Hauer wrote:
> > On Wed, Mar 21, 2012 at 08:01:22PM +0000, Mark Brown wrote:
> 
> > > +	if (!clk_register(&pdev->dev, "xtal", &wm831x_xtal_ops,
> > > +			  &clkdata->xtal_hw, NULL, 0, CLK_IS_ROOT))
> > > +		return -EINVAL;
> 
> > The clock names are unique identifiers for the clock, so clocks in
> > drivers should probably have dev_name encoded into them.
> 
> No, that's not sensible.  We shouldn't be open coding this into each
> individual driver that provides clocks, and we shouldn't have clock
> users having to guess at what scheme the driver author used to dedupe
> the clocks.  As a driver author you would assume that the reason we're
> providing the struct device to the registration function in the first
> place is so that the core has the information it needs to do that.
> 
> I did provide patches to do what you suggest in the core for one of the
> earlier versions of the API, I have to say I didn't check to see if they
> got dropped during the general lulls.

It seems they got dropped. Currently the clock framework does nothing
with the device argument. But right, it could use this argument to
generate a suitable name.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/