linux-kernel - Re: [PATCH] USB: quirks: Fix another ELAN touchscreen

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Date:	Mon, 23 Nov 2015 15:52:22 +0100 (CET)
From:	Jiri Kosina <jikos@...nel.org>
To:	Adrien Vergé <adrienverge@...il.com>
cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Macpaul Lin <macpaul@...il.com>,
	Vincent Palatin <vpalatin@...omium.org>,
	Logan Gunthorpe <logang@...tatee.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Yao-Wen Mao <yaowen@...gle.com>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] USB: quirks: Fix another ELAN touchscreen

On Sat, 21 Nov 2015, Adrien Vergé wrote:

> Like other buggy models that had their fixes [1], the touchscreen with
> id 04f3:21b8 from ELAN Microelectronics needs the device-qualifier
> quirk. Otherwise, it fails to respond, blocks the boot for a random
> amount of time and pollutes dmesg with:
> 
> [ 2887.373196] usb 1-5: new full-speed USB device number 41 using xhci_hcd
> [ 2889.502000] usb 1-5: unable to read config index 0 descriptor/start: -71
> [ 2889.502005] usb 1-5: can't read configurations, error -71
> [ 2889.654571] usb 1-5: new full-speed USB device number 42 using xhci_hcd
> [ 2891.783438] usb 1-5: unable to read config index 0 descriptor/start: -71
> [ 2891.783443] usb 1-5: can't read configurations, error -71

The drivers/hid part is

	Acked-by: Jiri Kosina <jkosina@...e.cz>

Makes one wonder however whether we shouldn't be applying ALWAYS_POLL to 
all ELAN devices by default anyway.

> [1]: See commits c68929f, 876af5d, d749947, a32c99e and dc703ec.
> 
> Tested-by: Adrien Vergé <adrienverge@...il.com>

You need signoff here as well so that the patch can be applied.

Thanks,

-- 
Jiri Kosina
SUSE Labs

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