From: Greg KH <gregkh@linuxfoundation.org>
To: Max Staudt <mstaudt@suse.de>
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 8250: option 'force_polling' for buggy IRQs
Date: Mon, 25 Jul 2016 10:47:12 -0700 [thread overview]
Message-ID: <20160725174712.GA5752@kroah.com> (raw)
In-Reply-To: <1469468175-15704-1-git-send-email-mstaudt@suse.de>
On Mon, Jul 25, 2016 at 07:36:15PM +0200, Max Staudt wrote:
> Some serial ports may not emit IRQs properly, or there may be a defect
> in their routing on the motherboard.
>
> This patch allows these ports to be used anyway (or until a better
> workaround is known for a specific platform), though with no guarantees.
>
> If you have such a buggy UART, boot Linux with 8250.force_polling=1 .
Ick, don't add new module parameters if at all possible.
> It is essentially the kernel level version of:
>
> setserial /dev/ttySn irq 0
Why can't you just do this instead?
thanks,
greg k-h
next prev parent reply other threads:[~2016-07-25 17:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-25 17:36 [PATCH] 8250: option 'force_polling' for buggy IRQs Max Staudt
2016-07-25 17:47 ` Greg KH [this message]
2016-07-26 11:42 ` Max Staudt
2016-07-26 15:08 ` Greg KH
2016-07-26 16:18 ` Max Staudt
2016-07-27 12:09 ` One Thousand Gnomes
2016-07-27 12:14 ` Max Staudt
2016-07-27 13:33 ` Theodore Ts'o
2016-07-27 20:01 ` One Thousand Gnomes
2016-07-28 9:59 ` Max Staudt
2016-07-28 14:47 ` Greg KH
2016-07-28 16:01 ` Theodore Ts'o
2016-07-28 18:40 ` Eric W. Biederman
2016-07-29 9:23 ` One Thousand Gnomes
2016-07-29 9:58 ` Max Staudt
2016-07-29 17:38 ` Eric W. Biederman
2016-08-01 15:27 ` One Thousand Gnomes
2016-07-25 18:19 ` kbuild test robot
2016-07-26 11:47 ` [PATCHv2] " Max Staudt
2016-07-26 11:54 ` [PATCHv3] " Max Staudt
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