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SubjectRe: [PATCH v2 2/2] PCI/ERR: Add reset support for non fatal errors
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Hi Sathy,

one minor comments below.

On 2020/6/5 5:50, sathyanarayanan.kuppuswamy@linux.intel.com wrote:
> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
>
> PCI_ERS_RESULT_NEED_RESET error status implies the device is
> requesting a slot reset and a notification about slot reset
> completion via ->slot_reset() callback.
>
> But in non-fatal errors case, if report_error_detected() or
> report_mmio_enabled() functions requests PCI_ERS_RESULT_NEED_RESET
> then current pcie_do_recovery() implementation does not do the
> requested explicit slot reset, instead just calls the ->slot_reset()
> callback on all affected devices. Notifying about the slot reset
> completion without resetting it incorrect. So add this support.
>
> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> ---
> drivers/pci/pcie/err.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
> index 5fe8561c7185..94d1c2ff7b40 100644
> --- a/drivers/pci/pcie/err.c
> +++ b/drivers/pci/pcie/err.c
> @@ -206,6 +206,9 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
> * functions to reset slot before calling
> * drivers' slot_reset callbacks?
> */
> + if (state != pci_channel_io_frozen)
> + pci_reset_bus(dev);
> +

If it's the implementation to reset the slot, should we remove the TODO comments?
JYI.

Thanks,
Yicong


> status = PCI_ERS_RESULT_RECOVERED;
> pci_dbg(dev, "broadcast slot_reset message\n");
> pci_walk_bus(bus, report_slot_reset, &status);

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