Hi Julia, Linus, and others,

we applied the patch and ran out setup for four hours continuously
without encountering the crash.  That's the longest we've run it to
date.  Thank you for your help and especially for your very speedy
replies.

-Brian

On Wed, Jan 18, 2017 at 11:39 AM, Brian Wrenn [off-list ref] wrote:

Hi Julia and Linus,

we haven't gotten to testing with the patch, but I will report back
when we have done so.

Thank you very much for the help.

On Wed, Jan 18, 2017 at 3:49 AM, Linus Walleij [off-list ref] wrote:

quoted

On Tue, Jan 17, 2017 at 9:19 PM, Julia Cartwright [off-list ref] wrote:

quoted

Can you give the following patch a try?  Even though this problem is
only observable on -rt kernels, the below patch is suitable for
inclusion in mainline.  (The below is ontop of -next, you may have to
finnagle it a bit to work on the linaro frankenkernel).

This looks like one of the RT cases pointed out by Grygorii i
Documentation/gpio/driver.txt
and the patch looks fine.

Once you have confirmation that it solves the problem, add
a Tested-by: tag and send to the GPIO mailinglist & me and
make sure to get Björn Andersson on the CC so he can review
it swiftly.

Yours,
Linus Walleij