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Message-Id: <20230807083205.18557-1-ganeshgr@linux.ibm.com> Date: Mon, 7 Aug 2023 14:02:05 +0530 From: Ganesh Goudar <ganeshgr@...ux.ibm.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, moshe@...dia.com, leon@...nel.org, mahesh@...ux.ibm.com, oohall@...il.com, Ganesh Goudar <ganeshgr@...ux.ibm.com> Subject: [PATCH net] net/mlx5: Avoid MMIO when the error is detected When the drivers are notfied about the pci error, All the IO to the card must be stopped, Else the recovery would fail, Avoid memory-mapped IO until the device recovers from pci error. Signed-off-by: Ganesh Goudar <ganeshgr@...ux.ibm.com> --- drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c index 932fbc843c69..010dee4eec14 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c @@ -221,10 +221,13 @@ static void mlx5_timestamp_overflow(struct work_struct *work) clock = container_of(timer, struct mlx5_clock, timer); mdev = container_of(clock, struct mlx5_core_dev, clock); + if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) + goto out; write_seqlock_irqsave(&clock->lock, flags); timecounter_read(&timer->tc); mlx5_update_clock_info_page(mdev); write_sequnlock_irqrestore(&clock->lock, flags); +out: schedule_delayed_work(&timer->overflow_work, timer->overflow_period); } -- 2.40.1
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