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From: Chris Rankin <rankincj@yahoo.com>
To: "linux-media@vger.kernel.org" <linux-media@vger.kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: PWC webcam and setpwc tool no longer working with 3.12.11 kernel
Date: Thu, 20 Feb 2014 11:30:26 -0800 (PST)	[thread overview]
Message-ID: <1392924626.38711.YahooMailNeo@web120304.mail.ne1.yahoo.com> (raw)



Hi,

I have an old Logitech webcam, with USB IDs 046d:08b3. When I try to use this camera now, I see this error in the dmesg log:

[ 2883.852464] pwc: isoc_init() submit_urb 0 failed with error -28


This error is apparently ENOSPC, which made me suspect that I was trying to use a mode that would require compression. However, when I tried using setpwc to configure the camera's options I received more errors:
$ setpwc -c 3
setpwc v1.3, (C) 2003-2006 by folkert@vanheusden.com
Error while doing ioctl VIDIOCPWCSCQUAL: Inappropriate ioctl for device


Has the kernel-to-userspace interface for PWC devices changed? Because how else could this IOCTL be "inappropriate"? Is there an alternative to setpwc, please?

Thanks,
Chris

             reply	other threads:[~2014-02-20 19:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-20 19:30 Chris Rankin [this message]
2014-02-21  9:46 ` Hans de Goede
2014-02-21 14:49   ` Chris Rankin

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