linux-kernel - Re: [PATCH] PCI: qcom: Implement shutdown() callback

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Message-ID: <tb6kkyfgpemzacfwbg45otgcrg5ltj323y6ufjy3bw3rgri7uf@vrmmtueyg7su>
Date: Tue, 15 Apr 2025 13:09:00 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Krzysztof Wilczyński <kw@...ux.com>, Rob Herring <robh@...nel.org>, 
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, quic_mrana@...cinc.com, quic_vbadigan@...cinc.com, 
	quic_ramkri@...cinc.com, quic_vpernami@...cinc.com
Subject: Re: [PATCH] PCI: qcom: Implement shutdown() callback

On Tue, Apr 01, 2025 at 04:51:37PM +0530, Krishna Chaitanya Chundru wrote:
> From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> 
> PCIe host controller drivers are supposed to properly remove the
> endpoint drivers and release the resources during host shutdown/reboot
> to avoid issues like smmu errors, NOC errors, etc.
> 
> So, stop and remove the root bus and its associated devices and release
> its resources during system shutdown to ensure a clean shutdown/reboot.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
> ---

While reposting a patch, you should include what has changed in-between in the
changelog. Even if there are no changes, you should mention that and express
your intent to get this patch merged.

- Mani

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