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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

  reply	other threads:[~2016-07-25 17:47 UTC|newest]

Thread overview: 23+ 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  9:23                     ` 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
2016-08-01 15:27                           ` One Thousand Gnomes
2016-07-25 18:19 ` kbuild test robot
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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