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From: Moritz Fischer <mdf@kernel.org>
To: Russ Weight <russell.h.weight@intel.com>
Cc: Moritz Fischer <mdf@kernel.org>,
	linux-fpga@vger.kernel.org, trix@redhat.com, lgoncalv@redhat.com,
	yilun.xu@intel.com, hao.wu@intel.com, matthew.gerlach@intel.com,
	rc@silicom.dk, stable@vger.kernel.org
Subject: Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration
Date: Thu, 16 Sep 2021 15:50:39 -0700	[thread overview]
Message-ID: <YUPKPxrgkLaqEZRr@epycbox.lan> (raw)
In-Reply-To: <e070cf0f-76d4-5bd8-2e7f-67499351e449@intel.com>

On Thu, Sep 16, 2021 at 03:34:39PM -0700, Russ Weight wrote:
> 
> On 9/16/21 3:24 PM, Moritz Fischer wrote:
> > On Thu, Sep 16, 2021 at 02:07:33PM -0700, Russ Weight wrote:
> >> CSR address space for Accelerator Functional Units (AFU) is not available
> >> during the early Device Feature List (DFL) enumeration. Early access
> >> to this space results in invalid data and port errors. This change adds
> >> a condition to prevent an early read from the AFU CSR space.
> >>
> >> Signed-off-by: Russ Weight <russell.h.weight@intel.com>
> >>
> >> Fixes: 23bcda750558 ("fpga: dfl: expose feature revision from struct
> >> dfl_device")
> > Did you mean:
> >
> > Fixes: 1604986c3e6b ("fpga: dfl: expose feature revision from struct dfl_device")
> Oops - I must have been looking at the wrong branch. Yes - you have the
> correct commit ID
> >
> > And for future please don't line break those, or we'll get yelled at :)
> Got it.
> 
> Thanks!
> - Russ
> >
> > I can locally fix it up, no need to resubmit
> >
> > - Moritz
> 
Applied w/changes to fixes,

- Moritz

  reply	other threads:[~2021-09-16 22:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-16 21:07 Russ Weight
2021-09-16 22:24 ` Moritz Fischer
2021-09-16 22:34   ` Russ Weight
2021-09-16 22:50     ` Moritz Fischer [this message]
2021-09-17 18:24       ` Russ Weight
2021-09-17  5:42 ` Greg KH
2021-09-17 16:26   ` Moritz Fischer

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