On 21/3/18 1:06 pm, Sam Bobroff wrote:
> The caller will always pass NULL for 'rmv_data' when
> 'eeh_aware_driver' is true, so the first two calls to
> eeh_pe_dev_traverse() can be combined without changing behaviour as
> can the two arms of the final 'if' block.
>
> This should not change behaviour.
>
> Signed-off-by: Sam Bobroff <sam.bobr...@au1.ibm.com>
Reviewed-by: Alexey Kardashevskiy <a...@ozlabs.ru>
> ---
> ====== v2 -> v3: ======
> Corrected two missed cases of eeh_aware_driver -> driver_eeh_aware.
>
> arch/powerpc/kernel/eeh_driver.c | 32 ++++++++++----------------------
> 1 file changed, 10 insertions(+), 22 deletions(-)
>
> diff --git a/arch/powerpc/kernel/eeh_driver.c
> b/arch/powerpc/kernel/eeh_driver.c
> index 93fc22e791fa..43ceb6263cd8 100644
> --- a/arch/powerpc/kernel/eeh_driver.c
> +++ b/arch/powerpc/kernel/eeh_driver.c
> @@ -647,16 +647,12 @@ static int eeh_reset_device(struct eeh_pe *pe, struct
> pci_bus *bus,
> * into pci_hp_add_devices().
> */
> eeh_pe_state_mark(pe, EEH_PE_KEEP);
> - if (!driver_eeh_aware) {
> - if (pe->type & EEH_PE_VF) {
> - eeh_pe_dev_traverse(pe, eeh_rmv_device, NULL);
> - } else {
> - pci_lock_rescan_remove();
> - pci_hp_remove_devices(bus);
> - pci_unlock_rescan_remove();
> - }
> - } else {
> + if (driver_eeh_aware || (pe->type & EEH_PE_VF)) {
> eeh_pe_dev_traverse(pe, eeh_rmv_device, rmv_data);
> + } else {
> + pci_lock_rescan_remove();
> + pci_hp_remove_devices(bus);
> + pci_unlock_rescan_remove();
> }
>
> /*
> @@ -691,8 +687,9 @@ static int eeh_reset_device(struct eeh_pe *pe, struct
> pci_bus *bus,
> * the device up before the scripts have taken it down,
> * potentially weird things happen.
> */
> - if (!driver_eeh_aware) {
> - pr_info("EEH: Sleep 5s ahead of complete hotplug\n");
> + if (!driver_eeh_aware || rmv_data->removed) {
> + pr_info("EEH: Sleep 5s ahead of %s hotplug\n",
> + (driver_eeh_aware ? "partial" : "complete"));
> ssleep(5);
>
> /*
> @@ -705,19 +702,10 @@ static int eeh_reset_device(struct eeh_pe *pe, struct
> pci_bus *bus,
> if (pe->type & EEH_PE_VF) {
> eeh_add_virt_device(edev, NULL);
> } else {
> - eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
> + if (!driver_eeh_aware)
> + eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
> pci_hp_add_devices(bus);
> }
> - } else if (rmv_data->removed) {
> - pr_info("EEH: Sleep 5s ahead of partial hotplug\n");
> - ssleep(5);
> -
> - edev = list_first_entry(&pe->edevs, struct eeh_dev, list);
> - eeh_pe_traverse(pe, eeh_pe_detach_dev, NULL);
> - if (pe->type & EEH_PE_VF)
> - eeh_add_virt_device(edev, NULL);
> - else
> - pci_hp_add_devices(bus);
> }
> eeh_pe_state_clear(pe, EEH_PE_KEEP);
>
>
--
Alexey
