[PATCH v4 2/5] PCI/ERR: Add support for resetting the slots in a platform specific way

[Wilfred Mallawa]

On Thu, 2025-05-08 at 12:40 +0530, Manivannan Sadhasivam wrote:
> Some host bridge devices require resetting the slots in a platform
> specific
> way to recover them from error conditions such as Fatal AER errors,
> Link
> Down etc... So introduce pci_host_bridge::reset_slot callback and
> call it
> from pcibios_reset_secondary_bus() if available.
> 
> The 'reset_slot' callback is responsible for resetting the given slot
> referenced by the 'pci_dev' pointer in a platform specific way and
> bring it
> back to the working state if possible. If any error occurs during the
> slot
> reset operation, relevant errno should be returned.
> 
> Signed-off-by: Manivannan Sadhasivam
> <manivannan.sadhasivam at linaro.org>
> 
Hey Manivannan,

I've been testing this by adding support for the reset_slot() callback
in the dw-rockchip driver. Which has now fixed issues with sysfs issued
bus resets to endpoints. So feel free to use:

Tested-by: Wilfred Mallawa <wilfred.mallawa at wdc.com>

Regards,
Wilfred