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  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]
Date:	Wed, 17 Sep 2014 09:32:52 +0800
From:	Shawn Guo <>
To:	Nicolin Chen <>
CC:	Shengjiu Wang <>, <>,
	<>, <>,
	<>, <>, <>,
	<>, <>,
Subject: Re: [PATCH] ASoC: fsl_spdif: don't change the root clock rate of
 spdif in driver

On Tue, Sep 16, 2014 at 11:19:28AM -0700, Nicolin Chen wrote:
> On Tue, Sep 16, 2014 at 07:46:34PM +0800, Shengjiu Wang wrote:
> > The spdif root clock may be used by other module or defined with
> > CLK_SET_RATE_GATE, so we can't change the clock rate in driver.
> > In this patch remove the clk_set_rate and clk_round_rate to protect the
> > clock.
> It's a quite convenient and conservative way to remove the clock
> dealing code in the driver, however, it may result less flexible
> functionalities.
> The reason why I left the clk_set_rate() in the driver is to hope
> we may find a better way to tackle those tough situations. For IP
> itself, it doesn't matter if the clock the SoC provides to it is
> being shared by other modules or not.
> So I think, if it's a shared clock, we should not define it as a
> rate-changeable one in the SoC level, as we might still have some
> SoCs provide a dedicated clock to S/PDIF so as to get the maximum
> range of clock support for users.
> @Shawn
> Sorry to involve you in this topic. I'm not so sure if we can do
> this in the clock driver so that the clock rate would be fixed
> even if the driver is trying to change it. If we can, I think we
> may use a better solution here instead.

No, we do not have anything like that today.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists