From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: paulus@samba.org, mpe@ellerman.id.au,
Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH 1/9] powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear()
Date: Tue, 2 Aug 2016 14:10:29 +1000 [thread overview]
Message-ID: <1470111037-18531-2-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1470111037-18531-1-git-send-email-gwshan@linux.vnet.ibm.com>
The PE number (@frozen_pe_no), filled by opal_pci_next_error() is in
big-endian format. It should be converted to CPU-dian before it is
passed to opal_pci_eeh_freeze_clear() when clearing the frozen state
if the PE is invalid one. As Michael Ellerman pointed out, the issue
is also detected by sparse:
gwshan@gwshan:~/sandbox/l$ make C=2 CF=-D__CHECK_ENDIAN__ \
arch/powerpc/platforms/powernv/eeh-powernv.o
:
arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
warning: incorrect type in argument 2 (different base types)
arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
expected unsigned long long [unsigned] [usertype] pe_number
arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
got restricted __be64 [addressable] [usertype] frozen_pe_no
This passes CPU-endian PE number to opal_pci_eeh_freeze_clear() and
it should be part of commit <0f36db77643b> ("powerpc/eeh: Fix wrong
printed PE number"), which was merged to 4.3 kernel.
Fixes: 71b540adffd9 ("powerpc/powernv: Don't escalate non-existing frozen PE")
Cc: stable@vger.kernel.org # v4.3+
Suggested-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 86544ea..75363d9 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1538,7 +1538,7 @@ static int pnv_eeh_next_error(struct eeh_pe **pe)
/* Try best to clear it */
opal_pci_eeh_freeze_clear(phb->opal_id,
- frozen_pe_no,
+ be64_to_cpu(frozen_pe_no),
OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
ret = EEH_NEXT_ERR_NONE;
} else if ((*pe)->state & EEH_PE_ISOLATED ||
--
2.1.0
next prev parent reply other threads:[~2016-08-02 4:10 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-02 4:10 [PATCH 0/9] powerpc/powernv: Fix sparse warnings for PCI files Gavin Shan
2016-08-02 4:10 ` Gavin Shan [this message]
2016-08-02 4:32 ` [PATCH 1/9] powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear() Russell Currey
2016-10-05 2:36 ` [1/9] " Michael Ellerman
2016-08-02 4:10 ` [PATCH 2/9] powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag() Gavin Shan
2016-08-02 4:33 ` Russell Currey
2016-10-05 2:36 ` [2/9] " Michael Ellerman
2016-08-02 4:10 ` [PATCH 3/9] powerpc/powernv: Specify proper data type for PCI_SLOT_ID_PREFIX Gavin Shan
2016-10-05 2:36 ` [3/9] " Michael Ellerman
2016-08-02 4:10 ` [PATCH 4/9] powerpc/powernv: Use CPU-endian PEST in pnv_pci_dump_p7ioc_diag_data() Gavin Shan
2016-10-05 2:36 ` [4/9] " Michael Ellerman
2016-08-02 4:10 ` [PATCH 5/9] powerpc/powernv: Fix endian for return value from pnv_tce_get() Gavin Shan
2016-08-02 4:10 ` [PATCH 6/9] powerpc/powernv: Pass CPU-endian argument to xchg() in pnv_tce_xchg() Gavin Shan
2016-08-02 4:10 ` [PATCH 7/9] powerpc/powernv: Fix data type for @r in pnv_ioda_parse_m64_window() Gavin Shan
2016-10-05 2:36 ` [7/9] " Michael Ellerman
2016-08-02 4:10 ` [PATCH 8/9] powerpc/powernv: Fix data type of argument to __raw_{rm_, }writeq() Gavin Shan
2016-08-02 4:10 ` [PATCH 9/9] powerpc/powernv: Fix data type in pnv_pci_ioda2_table_do_free_pages() Gavin Shan
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