linux-kernel - Re: [PATCH v2 1/4] PCI: qcom-ep: Mark BAR0/BAR2 as 64bit BARs and BAR1/BAR3 as RESERVED

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Message-ID: <372csbbx4fogqubtz2mh6ztqhpriohecszidhr47fx3lnjm6nq@6whpuyd6vypc>
Date: Fri, 29 Nov 2024 16:38:32 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: kw@...ux.com, gregkh@...uxfoundation.org, arnd@...db.de, 
	lpieralisi@...nel.org, shuah@...nel.org, kishon@...nel.org, aman1.gupta@...sung.com, 
	p.rajanbabu@...sung.com, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, 
	bhelgaas@...gle.com, linux-arm-msm@...r.kernel.org, robh@...nel.org, 
	linux-kselftest@...r.kernel.org, stable+noautosel@...nel.org
Subject: Re: [PATCH v2 1/4] PCI: qcom-ep: Mark BAR0/BAR2 as 64bit BARs and
 BAR1/BAR3 as RESERVED

On Fri, Nov 29, 2024 at 02:54:12PM +0530, Manivannan Sadhasivam wrote:
> On all Qcom endpoint SoCs, BAR0/BAR2 are 64bit BARs by default and software
> cannot change the type. So mark the those BARs as 64bit BARs and also mark
> the successive BAR1/BAR3 as RESERVED BARs so that the EPF drivers cannot
> use them.
> 
> Cc: stable+noautosel@...nel.org # depends on patch introducing only_64bit flag
> Fixes: f55fee56a631 ("PCI: qcom-ep: Add Qualcomm PCIe Endpoint controller driver")
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  drivers/pci/controller/dwc/pcie-qcom-ep.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry