linux-kernel - Re: [PATCH v4 08/14] PCI: cadence: Fix updating Vendor ID and Subsystem Vendor ID register

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Message-ID: <20200520213625.GA633506@bogus>
Date:   Wed, 20 May 2020 15:36:25 -0600
From:   Rob Herring <robh@...nel.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Tom Joseph <tjoseph@...ence.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 08/14] PCI: cadence: Fix updating Vendor ID and
 Subsystem Vendor ID register

On Wed, May 06, 2020 at 08:44:23PM +0530, Kishon Vijay Abraham I wrote:
> Commit 1b79c5284439 ("PCI: cadence: Add host driver for Cadence PCIe
> controller") in order to update Vendor ID, directly wrote to
> PCI_VENDOR_ID register. However PCI_VENDOR_ID in root port configuration
> space is read-only register and writing to it will have no effect.
> Use local management register to configure Vendor ID and Subsystem Vendor
> ID.
> 
> Fixes: 1b79c5284439 ("PCI: cadence: Add host driver for Cadence PCIe controller")

Fixes should come first.

> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  drivers/pci/controller/cadence/pcie-cadence-host.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)

Reviewed-by: Rob Herring <robh@...nel.org>