Messages in this thread | | | From | Nix <> | Subject | Re: [3.16.1 BISECTED REGRESSION]: Simtec Entropy Key (cdc-acm) broken in 3.16 | Date | Wed, 22 Oct 2014 15:00:22 +0100 |
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On 22 Oct 2014, Johan Hovold uttered the following:
> On Wed, Oct 22, 2014 at 10:31:17AM +0100, Nix wrote: >> On 14 Oct 2014, Johan Hovold verbalised: >> >> > On Sun, Oct 12, 2014 at 10:36:30PM +0100, Nix wrote: >> >> I have checked: this code is being executed against a symlink that >> >> points to /dev/ttyACM0, and the tcsetattr() succeeds. (At least, it's >> >> succeeding on the kernel I'm running now, but of course that's 3.16.5 >> >> with this commit reverted...) >> > >> > You could verify that by enabling debugging in the cdc-acm driver and >> > making sure that the corresponding control messages are indeed sent on >> > close. >> >> I have a debugging dump at >> <http://www.esperi.org.uk/~nix/temporary/cdc-acm.log>; it's fairly > > What kernel were you using here? The log seems to suggest that it was > generated with the commit in question reverted.
Wurgle. I think I was probably using the wrong one, as you suggest. Hell. That's no use at all is it. Still, at least you know what it looks like when it works. :)
I'll retry with the right one.
> What kernel version are you using? And do you have autosuspend enabled?
3.16.6 (but it's happened for 3.16.* obviously). No autosuspend (no *way* can this box suspend, but it only draws a couple of watts so I don't care).
-- NULL && (void)
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