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 2/9] powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag()
Date: Tue, 2 Aug 2016 14:10:30 +1000 [thread overview]
Message-ID: <1470111037-18531-3-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1470111037-18531-1-git-send-email-gwshan@linux.vnet.ibm.com>
The hub diag-data type is filled with big-endian data by OPAL call
opal_pci_get_hub_diag_data(). We need convert it to CPU-endian value
before using it. The issue is reported by sparse as pointed by Michael
Ellerman:
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:1309:21: \
warning: restricted __be16 degrades to integer
arch/powerpc/platforms/powernv/eeh-powernv.c:1309:21: \
warning: restricted __be16 degrades to integer
arch/powerpc/platforms/powernv/eeh-powernv.c:1309:21: \
warning: restricted __be16 degrades to integer
arch/powerpc/platforms/powernv/eeh-powernv.c:1309:21: \
warning: restricted __be16 degrades to integer
arch/powerpc/platforms/powernv/eeh-powernv.c:1309:21: \
warning: restricted __be16 degrades to integer
This converts hub diag-data type to CPU-endian before using it in
pnv_eeh_get_and_dump_hub_diag().
Fixes: 2a485ad7c88d ("powerpc/powernv: Drop PHB operation next_error()")
Cc: stable@vger.kernel.org # v4.1+
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
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 75363d9..8fec7a3 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1306,7 +1306,7 @@ static void pnv_eeh_get_and_dump_hub_diag(struct pci_controller *hose)
return;
}
- switch (data->type) {
+ switch (be16_to_cpu(data->type)) {
case OPAL_P7IOC_DIAG_TYPE_RGC:
pr_info("P7IOC diag-data for RGC\n\n");
pnv_eeh_dump_hub_diag_common(data);
--
2.1.0
next prev parent reply other threads:[~2016-08-02 4:11 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 ` [PATCH 1/9] powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear() Gavin Shan
2016-08-02 4:32 ` Russell Currey
2016-10-05 2:36 ` [1/9] " Michael Ellerman
2016-08-02 4:10 ` Gavin Shan [this message]
2016-08-02 4:33 ` [PATCH 2/9] powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag() 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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