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-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/core_thermal.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index 8b71706f7a27..821fef2e2230 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -31,6 +31,11 @@
#define MLXSW_THERMAL_SPEED_MAX (MLXSW_THERMAL_MAX_STATE * 2)
#define MLXSW_THERMAL_SPEED_MIN_LEVEL 2 /* 20% */
+/* External cooling devices, allowed for binding to mlxsw thermal zones. */
+static char * const mlxsw_thermal_external_allowed_cdev[] = {
+ "mlxreg_fan",
+};
+
struct mlxsw_thermal_trip {
int type;
int temp;
@@ -107,6 +112,13 @@ static int mlxsw_get_cooling_device_idx(struct mlxsw_thermal *thermal,
if (thermal->cdevs[i] == cdev)
return i;
+ /* Allow mlxsw thermal zone binding to an external cooling device */
+ for (i = 0; i < ARRAY_SIZE(mlxsw_thermal_external_allowed_cdev); i++) {
+ if (strnstr(cdev->type, mlxsw_thermal_external_allowed_cdev[i],
+ sizeof(cdev->type)))
+ return 0;
+ }
+
return -ENODEV;
}