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net/mlx5: Fix access to a non-supported register

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Validate MRTC register is supported before triggering a delayed work
which accesses it.

Fixes: 5a1023deee ("net/mlx5: Add periodic update of host time to firmware")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Aya Levin 2021-11-07 17:21:45 +02:00 committed by Saeed Mahameed
parent 924cc4633f
commit 502e82b913
3 changed files with 8 additions and 7 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/health.c
View file

@ -836,7 +836,7 @@ void mlx5_start_health_poll(struct mlx5_core_dev *dev)
health->timer.expires = jiffies + msecs_to_jiffies(poll_interval_ms);
add_timer(&health->timer);
if (mlx5_core_is_pf(dev))
if (mlx5_core_is_pf(dev) && MLX5_CAP_MCAM_REG(dev, mrtc))
queue_delayed_work(health->wq, &health->update_fw_log_ts_work, 0);
}

8
drivers/net/ethernet/mellanox/mlx5/core/main.c
View file

@ -1071,18 +1071,16 @@ static int mlx5_function_setup(struct mlx5_core_dev *dev, bool boot)
mlx5_set_driver_version(dev);
mlx5_start_health_poll(dev);
err = mlx5_query_hca_caps(dev);
if (err) {
mlx5_core_err(dev, "query hca failed\n");
goto stop_health;
goto reclaim_boot_pages;
}
mlx5_start_health_poll(dev);
return 0;
stop_health:
mlx5_stop_health_poll(dev, boot);
reclaim_boot_pages:
mlx5_reclaim_startup_pages(dev);
err_disable_hca:

5
include/linux/mlx5/mlx5_ifc.h
View file

@ -9698,7 +9698,10 @@ struct mlx5_ifc_mcam_access_reg_bits {
u8 regs_84_to_68[0x11];
u8 tracer_registers[0x4];
u8 regs_63_to_32[0x20];
u8 regs_63_to_46[0x12];
u8 mrtc[0x1];
u8 regs_44_to_32[0xd];
u8 regs_31_to_0[0x20];
};