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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h
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@@ -36,7 +36,6 @@
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 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
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 void mlx5_init_clock(struct mlx5_core_dev *mdev);
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 void mlx5_cleanup_clock(struct mlx5_core_dev *mdev);
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-void mlx5_pps_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe);
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 static inline int mlx5_clock_get_ptp_index(struct mlx5_core_dev *mdev)
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 {
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@@ -46,11 +45,13 @@
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 static inline ktime_t mlx5_timecounter_cyc2time(struct mlx5_clock *clock,
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 						u64 timestamp)
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 {
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+	unsigned int seq;
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 	u64 nsec;
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-	read_lock(&clock->lock);
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-	nsec = timecounter_cyc2time(&clock->tc, timestamp);
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-	read_unlock(&clock->lock);
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+	do {
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+		seq = read_seqbegin(&clock->lock);
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+		nsec = timecounter_cyc2time(&clock->tc, timestamp);
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+	} while (read_seqretry(&clock->lock, seq));
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 	return ns_to_ktime(nsec);
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 }
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@@ -58,8 +59,6 @@
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 #else
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 static inline void mlx5_init_clock(struct mlx5_core_dev *mdev) {}
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 static inline void mlx5_cleanup_clock(struct mlx5_core_dev *mdev) {}
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-static inline void mlx5_pps_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) {}
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-
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 static inline int mlx5_clock_get_ptp_index(struct mlx5_core_dev *mdev)
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 {
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 	return -1;