Re: [PATCH 03/10] usb/amd5536udc: move disconnect code into ISR

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On 04.02.2012 18:55, Sebastian Andrzej Siewior wrote:
The disconnect code is scheduled in a tasklet. I don't see the point in
doing this and the comment says that we may want do this in the irq. This
patch is doing so.


The disconnect code should stay in a tasklet as a controller soft reset is done there. I remember issues when doing a controller soft reset inside interrupt context because the whole controller is wiped by reset.

Soft reset on disconnect was needed for disconnects in the middle of a transfer. Then controller buffers and registers may remain in a kind of stuck state which can be resolved by a soft reset only.

I have to build up a system to play with the driver a little bit
(haven't done that for a while).

Sebastian, thank you very much for your work.

Thomas
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