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mlx5: Use refcount_t for refcount

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Reference counters are preferred to use refcount_t instead of
atomic_t.
This is because the implementation of refcount_t can prevent
overflows and detect possible use-after-free.
So convert atomic_t ref counters to refcount_t.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Chuhong Yuan
2019-08-06 09:59:50 +08:00
committed by Saeed Mahameed
parent 694a296024
commit 94f3e14e00
3 changed files with 8 additions and 7 deletions
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3
include/linux/mlx5/driver.h
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@@ -47,6 +47,7 @@
#include <linux/interrupt.h>
#include <linux/idr.h>
#include <linux/notifier.h>
#include <linux/refcount.h>
#include <linux/mlx5/device.h>
#include <linux/mlx5/doorbell.h>
@@ -398,7 +399,7 @@ enum mlx5_res_type {
struct mlx5_core_rsc_common {
enum mlx5_res_type res;
atomic_t refcount;
refcount_t refcount;
struct completion free;
};