From: Sasha Levin <sashal@kernel•org>
To: linux-kernel@vger•kernel.org, stable@vger•kernel.org
Cc: Alexey Kardashevskiy <aik@ozlabs•ru>,
Sam Bobroff <sbobroff@linux•ibm.com>,
linuxppc-dev@lists•ozlabs.org, Sasha Levin <sashal@kernel•org>
Subject: [PATCH AUTOSEL 4.9 51/91] powerpc/powernv/eeh/npu: Fix uninitialized variables in opal_pci_eeh_freeze_status
Date: Fri, 22 Nov 2019 01:00:49 -0500 [thread overview]
Message-ID: <20191122060129.4239-50-sashal@kernel.org> (raw)
In-Reply-To: <20191122060129.4239-1-sashal@kernel.org>
From: Alexey Kardashevskiy <aik@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 <aik@ozlabs•ru>
Reviewed-by: Sam Bobroff <sbobroff@linux•ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman•id.au>
Signed-off-by: Sasha Levin <sashal@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
next prev parent reply other threads:[~2019-11-22 7:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191122060129.4239-1-sashal@kernel.org>
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 37/91] powerpc/book3s/32: fix number of bats in p/v_block_mapped() Sasha Levin
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 38/91] powerpc/xmon: fix dump_segments() Sasha Levin
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 47/91] powerpc/prom: fix early DEBUG messages Sasha Levin
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 48/91] powerpc/mm: Make NULL pointer deferences explicit on bad page faults Sasha Levin
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 49/91] powerpc/44x/bamboo: Fix PCI range Sasha Levin
2019-11-22 6:00 ` Sasha Levin [this message]
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 57/91] powerpc/83xx: handle machine check caused by watchdog timer Sasha Levin
2019-11-22 6:00 ` [PATCH AUTOSEL 4.9 58/91] powerpc/pseries: Fix node leak in update_lmb_associativity_index() Sasha Levin
2019-11-22 6:01 ` [PATCH AUTOSEL 4.9 67/91] net/wan/fsl_ucc_hdlc: Avoid double free in ucc_hdlc_probe() Sasha Levin
2019-11-22 6:01 ` [PATCH AUTOSEL 4.9 90/91] powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() Sasha Levin
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