linux-kernel - Re: [PATCH 1/2] 8250_pci: Replace commits 448ac154 and e86ff4a

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Message-ID: <CABE8wwsdA7cXG=3rFYxa6v9g1jYpNg8Mq3+JyboRyTcBSvJVNA@mail.gmail.com>
Date:	Tue, 3 Apr 2012 13:09:20 -0700
From:	"Williams, Dan J" <dan.j.williams@...el.com>
To:	sudhakar <sudhakar@...com>
Cc:	linux-serial@...r.kernel.org, alan@...ux.intel.com,
	gregkh@...uxfoundation.org, nhan.h.mai@...el.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] 8250_pci: Replace commits 448ac154 and e86ff4a

On Tue, Apr 3, 2012 at 12:43 PM, sudhakar <sudhakar@...com> wrote:
>
> From: Sudhakar Mamillapalli <sudhakar@...com>
>
>
> The following commits don't completely fix the KT serial missing
> interrupt problems.  So they have been replaced instead by
> enabling serial backup timer.  The iir-once + msi tried approach tried
> to enforce one read of the iir per THRE event, but its defeated by any
> other event occurring at the wrong time, particularly MSR events.
>
> 448ac15 serial/8250_pci: setup-quirk workaround for the kt serial controller
> e86ff4a serial/8250_pci: init-quirk msi support for kt serial controller
>
> Signed-off-by: Sudhakar Mamillapalli <sudhakar@...com>
> Acked-by: Dan Williams <dan.j.williams@...el.com>
> Acked-by: Nhan H Mai <nhan.h.mai@...el.com>

Just a note that this should also be tagged for 3.3-stable since the
msi setup hack in e86ff4a breaks suspend/resume like this:

[  365.250523] sysfs: cannot create duplicate filename
'/devices/pci0000:00/0000:00:16.3/msi_irqs'
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