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From: Christian Eggers <ceggers@arri.de>
To: Roland Hieber <rhi@pengutronix.de>
Cc: barebox@lists.infradead.org, Primoz Fiser <primoz.fiser@norik.com>
Subject: Re: [PATCH] usb: Add extra delay for device scan
Date: Tue, 10 Mar 2020 11:32:16 +0100	[thread overview]
Message-ID: <5171121.mPVAPPOFPN@n95hx1g2> (raw)
In-Reply-To: <20200310094225.qphvkdncc4zg3dfr@pengutronix.de>

Hi Roland,

Am Dienstag, 10. März 2020, 10:42:25 CET schrieb Roland Hieber:
> This should probably be:?
> 
>   Fixes: b1d9837182 ("usb: Change power-on / scanning timeout handling")
> 
>  - Roland
> 

I definitely isolated the regression to that particular commit. Additionally I 
would like to note, that the scanning timeout is more than long enough. It 
seems that if the USB hub is queried within a loop without any sleep in 
between, it has no "resources" left to detecting new devices itself. The 
scanning timeout itself should not be affected by the additional sleep.

Regards
Christian




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  reply	other threads:[~2020-03-10 10:32 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-09 14:20 Christian Eggers
2020-03-10  9:42 ` Roland Hieber
2020-03-10 10:32   ` Christian Eggers [this message]
2020-03-11 15:04 ` Sascha Hauer

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