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Open Source and information security mailing list archives
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Date: Wed, 23 Nov 2011 22:00:02 +0000 From: Alan Cox <alan@...ux.intel.com> To: Oliver Neukum <oliver@...kum.org> Cc: Havard Skinnemoen <hskinnemoen@...gle.com>, Jiri Slaby <jslaby@...e.cz>, Dave Jones <davej@...hat.com>, Linux Kernel <linux-kernel@...r.kernel.org>, "Greg Kroah-Hartman" <gregkh@...e.de>, Jiri Slaby <jirislaby@...il.com> Subject: Re: [RFC] cdc-acm: Fix potential deadlock (lockdep warning) On Wed, 23 Nov 2011 20:34:24 +0100 Oliver Neukum <oliver@...kum.org> wrote: > Am Mittwoch, 23. November 2011, 20:22:33 schrieb Alan Cox: > > and on the open side they provide their own install() method which > > nicely avoids all the nasty locking problems and lets them use the > > standard tty_port_open/close/hangup etc rather than the partial > > ones. > > > > It might be worth turning the ACM driver to work the same way as > > it'll save doing that work later to achieve the same use of > > tty_port_open/close/.. > > > > The main thing is the use of install - which lets you plug the USB > > and tty bits together during the lookup of the device. > > Which driver is the best example? All the usb-serial drivers use the same core usb-serial.c to manage all these bits. They just plug in additional I/O methods. So just look at usb-serial.c -- 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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