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Message-Id: <200711211610.58684.oliver@neukum.org> Date: Wed, 21 Nov 2007 16:10:58 +0100 From: Oliver Neukum <oliver@...kum.org> To: Felipe Balbi <me@...ipebalbi.com> Cc: Markus Rechberger <mrechberger@...il.com>, Mark Lord <lkml@....ca>, linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net, Laurent Pinchart <laurentp@...-semaphore.com> Subject: Re: USB deadlock after resume Am Mittwoch 21 November 2007 schrieb Felipe Balbi: > > Do you know any good way for performing a softreset within the driver? > > The video application should get a continuous datastream after > > resuming the notebook, so the driver shouldn't be unloaded. > > The driver also keeps a list of previous camera settings which should > > be set up again after resuming. Stopping the video application and > > reattaching the device using ACPI (this board supports reconnecting > > the device using ACPI) should be avoided. > > When you suspend, you cut off vbus (afaik, correct me if I'm wrong), which > means your device will get disconnected. One way to avoid this is enabling > CONFIG_USB_PERSIST and trying with that on. Suspend may or may not cut off power. If it does cut off power, resume() will never be called, instead either disconnect() or reset_resume(). Regards Oliver - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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