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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2016-05-03 15:41:45 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-11 21:54:27 +1000 |
| commit | c8ceacc22bce95d3a9cff198c9c27a30105a16b8 (patch) | |
| tree | b18c57822bf59067f5c68c019482cff11b5e2a0b /arch/powerpc | |
| parent | 4fad494321351f0ac412945c6a464109ad96734a (diff) | |
| download | linux-c8ceacc22bce95d3a9cff198c9c27a30105a16b8.tar.gz linux-c8ceacc22bce95d3a9cff198c9c27a30105a16b8.tar.bz2 linux-c8ceacc22bce95d3a9cff198c9c27a30105a16b8.zip | |
powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus()
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@linux.vnet.ibm.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/powernv/eeh-powernv.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 9226df11bf39..593b8dc0e137 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, |