linux-kernel - Re: [PATCH 0/3] sysfs: Group visibility fixups

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Date: Fri, 23 Feb 2024 07:33:22 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Dan Williams <dan.j.williams@...el.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
	Marc Herbert <marc.herbert@...el.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-coco@...ts.linux.dev, alsa-devel@...a-project.org
Subject: Re: [PATCH 0/3] sysfs: Group visibility fixups

On Thu, Feb 22, 2024 at 12:40:48PM -0800, Dan Williams wrote:
> Hey Greg,
> 
> Marc was able to get me a backtrace for that bootup hang scenario that
> Pierre noted here [1]. A Tested-by is still pending, but I am certain
> this is the issue, and it may impact more than just the one platform if
> that "empty_attrs" pattern has been repeated anywhere else in the
> kernel.
> 
> I also took some time to document how to use the helpers a bit better,
> and introduce DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE() for cases where all
> that matters is group visibility and not per attribute visibility.
> 
> [1]: http://lore.kernel.org/r/b93ec9c2-23f5-486b-a3dc-ed9b960df359@linux.intel.com

I'll just queue these up now on my normal driver-core-next branch, and
not worry about a stable tag as I doubt anyone wants that now.  But if
they do, please let me know and I can provide one.

thanks for the quick fixes!

greg k-h