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From: Michal Nazarewicz <mina86@mina86.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
	Tony Lindgren <tony@atomide.com>,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	Felipe Balbi <felipe.balbi@linux.intel.com>,
	Bin Liu <b-liu@ti.com>,
	pali.rohar@gmail.com
Subject: Re: [PATCH] usb: f_mass_storage: test whether thread is running before starting another
Date: Thu, 07 Apr 2016 18:40:51 +0200	[thread overview]
Message-ID: <xa1tshyxgyng.fsf@mina86.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1604071024100.2179-100000@iolanthe.rowland.org>

> On Thu, 7 Apr 2016, Michal Nazarewicz wrote:
>> This makes me suspect it’s not possible to link a function instance to
>> the same configuration twice, but now that I think about it, I’m not
>> quite sure what would happen if one did:
>> 
>> 	ln -s functions/mass_storage.0 configs/c.1/foo
>> 	ln -s functions/mass_storage.0 configs/c.1/bar

On Thu, Apr 07 2016, Alan Stern wrote:
> Do you think it would be worthwhile to check for this possibility in 
> the driver and report an error?

I think this should be (if it isn’t already) blocked on configfs side.
I cannot see a legitimate use of such configuration and I wouldn’t be
surprised if other function drivers broke as well.

-- 
Best regards
ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ
«If at first you don’t succeed, give up skydiving»

  parent reply	other threads:[~2016-04-07 16:41 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-05 17:28 [PATCH] usb: f_mass_storage: test whether thread is running before starting another Michal Nazarewicz
2016-04-05 17:42 ` Alan Stern
2016-04-05 18:07   ` Michal Nazarewicz
2016-04-05 18:35     ` Alan Stern
2016-04-05 22:26       ` Michal Nazarewicz
2016-04-06 15:05         ` Alan Stern
2016-04-07  9:57           ` Michal Nazarewicz
2016-04-07 14:25             ` Alan Stern
2016-04-07 14:46               ` Ivaylo Dimitrov
2016-04-07 20:50                 ` Ivaylo Dimitrov
2016-04-07 16:40               ` Michal Nazarewicz [this message]
2016-04-18  9:26                 ` Andrzej Pietrasiewicz
2016-04-19 14:38                   ` Michal Nazarewicz

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