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

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Message-ID: <2b140616-c210-e754-a854-cd6a5675277d@suse.de>
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