Date: Tue, 9 Jan 2007 08:16:29 -0800 From: Luigi Rizzo <rizzo@icir.org> To: usb@freebsd.org Subject: any way to detect usb detached from a device driver ? Message-ID: <20070109081629.A74724@xorpc.icir.org>
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I am modifying a kernel device driver for webcams (see http://info.iet.unipi.it/~luigi/FreeBSD/usb-cameras.html) packing together various projects around, and i was wondering how to handle the situation of a device being detached while in use. Right now the code (from ports/multimedia/pwcbsd) detects that the device is in use while the driver-specific USB_DETACH routine is called, however then it goes on without doing anything. In another driver in the dree (urio.c) i see the driver calls usb_detach_wait() to wait up to 60s for the drivers to complete. However that function is not documented and used a bit inconsistently in the rest of /sys/dev/usb Any suggestions ? cheers luigi
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