Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration

[PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Russ Weight <hidden> · 2021-09-16
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Moritz Fischer <mdf@kernel.org> · 2021-09-16
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Russ Weight <hidden> · 2021-09-16
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Moritz Fischer <mdf@kernel.org> · 2021-09-16
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Russ Weight <hidden> · 2021-09-17
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Greg KH <gregkh@linuxfoundation.org> · 2021-09-17
Re: [PATCH 1/1] fpga: dfl: Avoid reads to AFU CSRs during enumeration · Moritz Fischer <mdf@kernel.org> · 2021-09-17

From: Greg KH <gregkh@linuxfoundation.org>
Date: 2021-09-17 05:42:48
Also in: linux-fpga

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 <redacted>

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

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