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Date: Thu, 8 Jan 2015 15:58:54 -0800 From: Andrew Duggan <aduggan@...aptics.com> To: Gabriele Mazzotta <gabriele.mzt@...il.com> CC: Mika Westerberg <mika.westerberg@...ux.intel.com>, <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <benjamin.tissoires@...hat.com>, <jkosina@...e.cz> Subject: Re: NULL pointer dereference in i2c-hid On 12/24/2014 03:53 PM, Gabriele Mazzotta wrote: [...snip...] >>>> Also, if you can get the firmware id from your touchpad that would also >>>> be useful. >>>> >>>> $ sudo ./rmihidtool -f /dev/hidraw0 >>> firmware id: 1522295 >> Thanks, I will see if I can get any additional information on this. >> >> Andrew > Hi, > > I think I found the source of the problem. > > $ ./rmihidtool /dev/hidraw1 -r 0x50 1 > 0x01 #PalmDetect Interrupt Enable, right? Yes, 0x50 does appear to be the address of the palm detect interrupt enable register. > $ ./rmihidtool /dev/hidraw1 -w 0x50 0 #Disable PalmDetect Interrupt > > It makes more sense now that widths greater than 12 trigger the bug. That is weird behavior and I haven't seen anything like that before. I will file a bug to see if firmware has any idea why this is happening. > > Gabriele > Andrew -- 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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