[PATCH AUTOSEL 4.9 51/91] powerpc/powernv/eeh/npu: Fix uninitialized variables in opal_pci_eeh_freeze_status

[Sasha Levin]

From: Alexey Kardashevskiy <a...@ozlabs.ru>

[ Upstream commit c20577014f85f36d4e137d3d52a1f61225b4a3d2 ]

The current implementation of the OPAL_PCI_EEH_FREEZE_STATUS call in
skiboot's NPU driver does not touch the pci_error_type parameter so
it might have garbage but the powernv code analyzes it nevertheless.

This initializes pcierr and fstate to zero in all call sites.

Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
Reviewed-by: Sam Bobroff <sbobr...@linux.ibm.com>
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 arch/powerpc/platforms/powernv/eeh-powernv.c | 8 ++++----
 arch/powerpc/platforms/powernv/pci-ioda.c    | 4 ++--
 arch/powerpc/platforms/powernv/pci.c         | 4 ++--
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c 
b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 2354ea51e8714..6189c4cf56c3f 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -546,8 +546,8 @@ static void pnv_eeh_get_phb_diag(struct eeh_pe *pe)
 static int pnv_eeh_get_phb_state(struct eeh_pe *pe)
 {
        struct pnv_phb *phb = pe->phb->private_data;
-       u8 fstate;
-       __be16 pcierr;
+       u8 fstate = 0;
+       __be16 pcierr = 0;
        s64 rc;
        int result = 0;
 
@@ -585,8 +585,8 @@ static int pnv_eeh_get_phb_state(struct eeh_pe *pe)
 static int pnv_eeh_get_pe_state(struct eeh_pe *pe)
 {
        struct pnv_phb *phb = pe->phb->private_data;
-       u8 fstate;
-       __be16 pcierr;
+       u8 fstate = 0;
+       __be16 pcierr = 0;
        s64 rc;
        int result;
 
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c 
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 8015e40bc7ee4..3ec673b4ca6ce 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -599,8 +599,8 @@ static int pnv_ioda_unfreeze_pe(struct pnv_phb *phb, int 
pe_no, int opt)
 static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no)
 {
        struct pnv_ioda_pe *slave, *pe;
-       u8 fstate, state;
-       __be16 pcierr;
+       u8 fstate = 0, state;
+       __be16 pcierr = 0;
        s64 rc;
 
        /* Sanity check on PE number */
diff --git a/arch/powerpc/platforms/powernv/pci.c 
b/arch/powerpc/platforms/powernv/pci.c
index db7b8020f68ef..98cc8ba07c233 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -482,8 +482,8 @@ static void pnv_pci_handle_eeh_config(struct pnv_phb *phb, 
u32 pe_no)
 static void pnv_pci_config_check_eeh(struct pci_dn *pdn)
 {
        struct pnv_phb *phb = pdn->phb->private_data;
-       u8      fstate;
-       __be16  pcierr;
+       u8      fstate = 0;
+       __be16  pcierr = 0;
        unsigned int pe_no;
        s64     rc;
 
-- 
2.20.1