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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2016-09-28 14:34:56 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-29 15:01:53 +1000 |
| commit | 313483dd72289ff0b7dff4207032d94dbce39cf6 (patch) | |
| tree | f321c9921e53c2fe539d2471f35055cb04d78445 /arch/powerpc/platforms | |
| parent | e0056b0a1206a423b5cfb67d79e4e85e1243f413 (diff) | |
| download | linux-stable-313483dd72289ff0b7dff4207032d94dbce39cf6.tar.gz linux-stable-313483dd72289ff0b7dff4207032d94dbce39cf6.tar.bz2 linux-stable-313483dd72289ff0b7dff4207032d94dbce39cf6.zip | |
powerpc/powernv: Unfreeze PE on allocation
This unfreezes PE when it's initialized because the PE might be put
into frozen state in the last hot remove path. It's not harmful to
do so if the PE is already in unfrozen state.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 748d733187a4..fd08a5fc253a 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -126,9 +126,22 @@ static inline bool pnv_pci_is_m64(struct pnv_phb *phb, struct resource *r) static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no) { + s64 rc; + phb->ioda.pe_array[pe_no].phb = phb; phb->ioda.pe_array[pe_no].pe_number = pe_no; + /* + * Clear the PE frozen state as it might be put into frozen state + * in the last PCI remove path. It's not harmful to do so when the + * PE is already in unfrozen state. + */ + rc = opal_pci_eeh_freeze_clear(phb->opal_id, pe_no, + OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); + if (rc != OPAL_SUCCESS) + pr_warn("%s: Error %lld unfreezing PHB#%d-PE#%d\n", + __func__, rc, phb->hose->global_number, pe_no); + return &phb->ioda.pe_array[pe_no]; } |