From: Arnd Bergmann <arnd@xxxxxxxx>
[ Upstream commit fbb7dc5db6dee553b5a07c27e86364a5223e244c ]
gcc points out a suspicious mixing of enum types in a function that
converts from MTHCA_OPCODE_* values to IB_WC_* values:
drivers/infiniband/hw/mthca/mthca_cq.c: In function 'mthca_poll_one':
drivers/infiniband/hw/mthca/mthca_cq.c:607:21: warning: implicit conversion from 'enum <anonymous>' to 'enum ib_wc_opcode' [-Wenum-conversion]
607 | entry->opcode = MTHCA_OPCODE_INVALID;
Nothing seems to ever check for MTHCA_OPCODE_INVALID again, no idea if
this is meaningful, but it seems harmless as it deals with an invalid
input.
Remove MTHCA_OPCODE_INVALID and set the ib_wc_opcode to 0xFF, which is
still bogus, but at least doesn't make compiler warnings.
Fixes: 2a4443a69934 ("[PATCH] IB/mthca: fill in opcode field for send completions")
Link: https://lore.kernel.org/r/20201026211311.3887003-1-arnd@xxxxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/infiniband/hw/mthca/mthca_cq.c | 2 +-
drivers/infiniband/hw/mthca/mthca_dev.h | 1 -
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c
index 59e1f6ea2ede9..1b0bb340281e6 100644
--- a/drivers/infiniband/hw/mthca/mthca_cq.c
+++ b/drivers/infiniband/hw/mthca/mthca_cq.c
@@ -612,7 +612,7 @@ static inline int mthca_poll_one(struct mthca_dev *dev,
entry->opcode = IB_WC_BIND_MW;
break;
default:
- entry->opcode = MTHCA_OPCODE_INVALID;
+ entry->opcode = 0xFF;
break;
}
} else {
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 4393a022867ba..e1fc67e73bf87 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -105,7 +105,6 @@ enum {
MTHCA_OPCODE_ATOMIC_CS = 0x11,
MTHCA_OPCODE_ATOMIC_FA = 0x12,
MTHCA_OPCODE_BIND_MW = 0x18,
- MTHCA_OPCODE_INVALID = 0xff
};
enum {
--
2.27.0
