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

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Message-ID: <20160801162731.2a3e2a8a@lxorguk.ukuu.org.uk>
Date:	Mon, 1 Aug 2016 16:27:31 +0100
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	Max Staudt <mstaudt@...e.de>, "Theodore Ts'o" <tytso@....edu>,
	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

> It might make sense to filter non-shared edge triggered interrupts out
> of irqpoll for that reason.  Anything that supports a level triggered
> interrupt should be fine.

That would also break some platforms that use it today 8(. We'd need
another irqpoll mode - at which point being able to force the serial port
IRQ to 0 would be useful for ACPI boxes (devicetree people just mod the
devicetree!)

Alan