Messages in this thread | | | Date | Thu, 12 Nov 2009 16:21:20 -0200 | From | Mauro Carvalho Chehab <> | Subject | Re: [PATCH] serial_core: avoid Break bouncing |
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Em Thu, 12 Nov 2009 17:56:49 +0000 Alan Cox <alan@lxorguk.ukuu.org.uk> escreveu:
> On Thu, 12 Nov 2009 14:05:04 -0200 > Mauro Carvalho Chehab <mchehab@redhat.com> wrote: > > > From: Eran Liberty <liberty@extricom.com> > > > > On some boxes, Break signal bounces, causing sysrq code to fail with some > > serial interfaces. > > > > A solution were posted on LKML in 2008: > > http://lkml.indiana.edu/hypermail/linux/kernel/0809.2/0730.html > > > > However, the fix weren't applied upstream. > > Because it was NAKked at the time as it seemed to be a bug in Eran's > hardware platform not a generic problem and also because it breaks > autobauding on break as used by some (particularly older) software. > > It's still NAKked and it would be helpful if people resubmitting old > stuff also looked through the thread attached the original submission.
I did, but I haven't find any nack at the public archives I've checked. My fault. Sorry about that.
> You seem to have a single case of a user with some kind of buggy uart or > possibly other weirdness going on. That's probably worth investigating > more deeply but the patch NAKked before is not the solution due to its > side effects
I'll do a deeper analysis and come back with a patch only if I discover something new about this issue. > > (also btw it'll upset other people who script their sysrq stuff including > breaks and don't expect strange timing limits) > > NAK again
--
Cheers, Mauro
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