Date: Mon, 23 Apr 2012 07:54:49 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-hackers@freebsd.org Cc: Yuri <yuri@rawbw.com> Subject: Re: Can't unload snd_uaudio: it hangs in D+ state Message-ID: <201204230754.49422.hselasky@c2i.net> In-Reply-To: <4F94A7A4.5080203@rawbw.com> References: <4F94A7A4.5080203@rawbw.com>
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On Monday 23 April 2012 02:51:48 Yuri wrote: > I was debugging Logitech C910 webcam. > 1. 'kldload snd_uaudio' while camera was attached > 2. ran webcamd, which worked > 3. stopped webcamd > 4. 'kldunload snd_uaudio' while the camera is still attached => hanged in > D+ 5. 'kldstat' also hangs in D+ > I didn't really use usound, just loaded the module. > > What is wrong with snd_uaudio? Hi, If it says in dmesg that an application is using a device, that is a problem with the PCM layer, that doesn't support detach of devices if they are in use. --HPS
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