linux-kernel - Re: [PATCH] 8250: option 'force

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 27 Jul 2016 14:14:24 +0200
From:	Max Staudt <mstaudt@...e.de>
To:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Cc:	Greg KH <gregkh@...uxfoundation.org>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] 8250: option 'force_polling' for buggy IRQs

On 07/27/2016 02:09 PM, One Thousand Gnomes wrote:
>> I simply thought this patch may be useful for other people as well, that's
>> why I sent it upstream.
> 
> If you set the IRQ to 0 it should poll anyway (0 means 'no IRQ') so I
> don't think the option is needed. At least it seems sufficient to get me
> by when I meet buggy PC BIOSes and the like

That's exactly what the patch does - but if there is already a way to set the
IRQ to 0, I would of course prefer to use that.

It seems I haven't found the trick you're using - could you please tell me how
you set the IRQ to 0?  I can't change it in the BIOS, so I have to do it at
the kernel level at the latest.

Thanks

Max