On 02/17/2016 02:44 PM, Gavin Shan wrote:
The function pnv_pci_reset_secondary_bus() is called like below.
It's impossible for call the function on root bus. So it's safe
to remove the root bus case in the function. No functional changes
introduced.
pci_parent_bus_reset() / pci_bus_reset() / pci_try_reset_bus()
pci_reset_bridge_secondary_bus()
pcibios_reset_secondary_bus()
pnv_pci_reset_secondary_bus()
Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Daniel Axtens <dja@xxxxxxxxxx>
Reviewed-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 9226df1..593b8dc 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -868,16 +868,8 @@ static int pnv_eeh_bridge_reset(struct pci_dev *dev, int option)
void pnv_pci_reset_secondary_bus(struct pci_dev *dev)
{
- struct pci_controller *hose;
-
- if (pci_is_root_bus(dev->bus)) {
- hose = pci_bus_to_host(dev->bus);
- pnv_eeh_root_reset(hose, EEH_RESET_HOT);
- pnv_eeh_root_reset(hose, EEH_RESET_DEACTIVATE);
- } else {
- pnv_eeh_bridge_reset(dev, EEH_RESET_HOT);
- pnv_eeh_bridge_reset(dev, EEH_RESET_DEACTIVATE);
- }
+ pnv_eeh_bridge_reset(dev, EEH_RESET_HOT);
+ pnv_eeh_bridge_reset(dev, EEH_RESET_DEACTIVATE);
}
static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type,
--
Alexey
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