Re: [PATCH 1/2] net/mlx4_core: clean up cq_res_start_move_to()

On 07/01/2014 15:01, Paul Bolle wrote:

Building resource_tracker.o triggers a GCC warning:
     drivers/net/ethernet/mellanox/mlx4/resource_tracker.c: In function 'mlx4_HW2SW_CQ_wrapper':
     drivers/net/ethernet/mellanox/mlx4/resource_tracker.c:3019:16: warning: 'cq' may be used uninitialized in this function [-Wmaybe-uninitialized]
       atomic_dec(&cq->mtt->ref_count);
                     ^

This is a false positive. But a cleanup of cq_res_start_move_to() can
help GCC here. The code currently uses a switch statement where a plain
if/else would do, since only two of the switch's four cases can ever
occur. Dropping that switch makes the warning go away.

While we're at it, do some coding style cleanups (missing braces), and
drop a test that always evaluates to true.

Hi Paul,

Our maintainer of that area of the code (SRIOV resource tracker) is busy 
now, but we will definitely look on these two patches in the coming 
days, thanks for posting them!