[PATCH 4.4 028/112] powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag()

From: Greg Kroah-Hartman
Date: Wed Oct 26 2016 - 08:54:58 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>

commit a7032132d7560a8434e1f54b71efd7fa20f073bd upstream.

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:

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()")
Suggested-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Russell Currey <ruscur@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1163,7 +1163,7 @@ static void pnv_eeh_get_and_dump_hub_dia
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);