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From: Greg KH <gregkh@linuxfoundation.org>
To: Russ Weight <russell.h.weight@intel.com>
Cc: 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: Fri, 17 Sep 2021 07:42:28 +0200	[thread overview]
Message-ID: <YUQqxBaRHH/Hnk6z@kroah.com> (raw)
In-Reply-To: <20210916210733.153388-1-russell.h.weight@intel.com>

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")

Nit, please keep this all on one line or our tools will complain about
it when we commit it to our trees :(

thanks,

greg k-h

  parent reply	other threads:[~2021-09-17  5:42 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-16 21:07 [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration Russ Weight
2021-09-16 22:24 ` Moritz Fischer
2021-09-16 22:34   ` Russ Weight
2021-09-16 22:50     ` Moritz Fischer
2021-09-17 18:24       ` Russ Weight
2021-09-17  5:42 ` Greg KH [this message]
2021-09-17 16:26   ` Moritz Fischer

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