linux-kernel - Re: [PATCH v1 0/2] Add runtime PM support to Rockchip DW PCIe driver

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Message-ID: <5264377.31r3eYUQgx@workhorse>
Date: Mon, 27 Oct 2025 16:06:44 +0100
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
 Bjorn Helgaas <bhelgaas@...gle.com>, Heiko Stuebner <heiko@...ech.de>,
 Niklas Cassel <cassel@...nel.org>, Shawn Lin <shawn.lin@...k-chips.com>,
 Hans Zhang <18255117159@....com>,
 "open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS"
 <linux-pci@...r.kernel.org>,
 "moderated list:ARM/Rockchip SoC support"
 <linux-arm-kernel@...ts.infradead.org>,
 "open list:ARM/Rockchip SoC support" <linux-rockchip@...ts.infradead.org>,
 open list <linux-kernel@...r.kernel.org>, Anand Moon <linux.amoon@...il.com>
Cc: Anand Moon <linux.amoon@...il.com>
Subject: Re: [PATCH v1 0/2] Add runtime PM support to Rockchip DW PCIe driver

On Monday, 27 October 2025 15:55:28 Central European Standard Time Anand Moon wrote:
> Introduce runtime power management support in the Rockchip DesignWare PCIe
> controller driver.  These changes allow the PCIe controller to suspend and
> resume dynamically, improving power efficiency on supported platforms.
> 
> Can Patch 1 can be backpoted to stable? It helps clean shutdown of PCIe.

You can do this by adding a Fixes tag to your patch. In your case, it
might be fixing whatever introduced the clk_bulk_prepare_enable, i.e.:

Fixes: 0e898eb8df4e ("PCI: rockchip-dwc: Add Rockchip RK356X host controller driver")

This would be put above your Signed-off-by in the first patch, after
the empty line.

To generate fixes tags like this, I use the following pretty format
in my .git/config:

    [pretty]
        fixes = Fixes: %h (\"%s\")

I can then do `git log --pretty=fixes` to show commits formatted
the right way. To find which commit to pick, `git blame` and
some sleuthing are helpful.

With this tag, stable bots can pick the commit into any release
that the commit it fixes is in.

Kind regards,
Nicolas Frattaroli

> 
> Clarification: the series is based on
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
> branch : controller/dw-rockchip
> 
> Thanks
> -Anand
> 
> Anand Moon (2):
>   PCI: dw-rockchip: Add remove callback for resource cleanup
>   PCI: dw-rockchip: Add runtime PM support to Rockchip PCIe driver
> 
>  drivers/pci/controller/dwc/pcie-dw-rockchip.c | 32 +++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> 
> base-commit: 7ad31f88429369ada44710176e176256a2812c3f
>