[PATCH v4] PCI: imx6: fix resource leaks in probe error paths

[Manivannan Sadhasivam]

On Mon, Aug 24, 2026 at 11:04:54PM +0800, Zhijian Han wrote:
> imx_pcie_probe() leaks both pwrctrl devices and power domains on failure:
> 
> - imx_pcie_attach_pd() attaches the "pcie" and "pcie_phy" power domains
>   and adds device links to them, but nothing detaches the domains on
>   probe failure or deferral, so they leak.
> 
> - A failure of devm_pm_runtime_set_active_enabled() returns directly
>   without destroying the pwrctrl devices.
> 
> - A partial failure inside imx_pcie_attach_pd() leaks the power domains
>   that were already attached.
> 
> Add imx_pcie_detach_pd() to detach the power domains in reverse order of
> acquisition and call it from the probe error paths.  Add
> DL_FLAG_AUTOREMOVE_CONSUMER to the device links so the driver core
> removes them automatically when probe fails, instead of tracking and
> deleting them manually.
> 
> Reported-by: sashiko-bot at kernel.org
> Link: https://lore.kernel.org/all/20260822013640.182C01F000E9@smtp.kernel.org/
> Fixes: 2c5768344f88 ("PCI: imx6: Move pci_pwrctrl_create_devices() to imx_pcie_probe()")
> Signed-off-by: Zhijian Han <hanzhijian1991 at gmail.com>

Frank, Richard, can I get your review for this patch?

- Mani