linux-kernel - Re: [GIT PATCH] USB autosuspend fixes for 2.6.23-rc6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 14 Sep 2007 02:59:00 -0700
From:	Greg KH <gregkh@...e.de>
To:	Jiri Kosina <jikos@...os.cz>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>,
	Oliver Neukum <oneukum@...e.de>,
	Matthew Dharm <mdharm-usb@...-eyed-alien.net>
Subject: Re: [GIT PATCH] USB autosuspend fixes for 2.6.23-rc6

On Fri, Sep 14, 2007 at 10:55:46AM +0200, Jiri Kosina wrote:
> For the rest of the HID quirks -- most of them are also workarounds for 
> broken classess of devices. Usually, they claim to be HID-compliant device 
> in their file descriptor, but they do not follow the spec (they send 
> inverted axes values, send usage codes that violate the specification, 
> etc), but we can easily work around these bugs by a few lines of code and 
> let the devices to be handled by usbhid flawlessly. I guess this is worth 
> it.

The reason for this is that the only way to write a userspace "driver"
for USB devices on Windows versions prior to Vista was to be a HID
device.  Your userspace program could then easily grab the device and
control it.

This could be fixed in Linux by providing a way to have driver
"heirachy" for USB whereby a vendor/product id providing driver would
take a higher priority than a class driver.

But we've been talking about that for over 7 years now :)

thanks,

greg k-h
-
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/