diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2016-10-25 18:16:20 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-14 12:12:53 -0500 |
| commit | e98172462f0b75ed60f3a73aa280fb29cafd450f (patch) | |
| tree | e4715f11d6423956a78763d08642fd13f0fd747d | |
| parent | 14ab8896f5d993c5f427504276e3c42ccb3cc354 (diff) | |
| download | linux-e98172462f0b75ed60f3a73aa280fb29cafd450f.tar.bz2 | |
IB/mlx4: avoid a -Wmaybe-uninitialize warning
There is an old warning about mlx4_SW2HW_EQ_wrapper on x86:
ethernet/mellanox/mlx4/resource_tracker.c: In function ‘mlx4_SW2HW_EQ_wrapper’:
ethernet/mellanox/mlx4/resource_tracker.c:3071:10: error: ‘eq’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
The problem here is that gcc won't track the state of the variable
across a spin_unlock. Moving the assignment out of the lock is
safe here and avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 84d7857ccc27..c548beaaf910 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -1605,13 +1605,14 @@ static int eq_res_start_move_to(struct mlx4_dev *dev, int slave, int index, r->com.from_state = r->com.state; r->com.to_state = state; r->com.state = RES_EQ_BUSY; - if (eq) - *eq = r; } } spin_unlock_irq(mlx4_tlock(dev)); + if (!err && eq) + *eq = r; + return err; } |