netdev - [patch net-next v2 07/12] devlink: make devlink_param_driverinit_value

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Date:   Thu, 26 Jan 2023 08:58:33 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, michael.chan@...adcom.com,
        jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
        tariqt@...dia.com, saeedm@...dia.com, leon@...nel.org,
        idosch@...dia.com, petrm@...dia.com, simon.horman@...igine.com,
        aelior@...vell.com, manishc@...vell.com, jacob.e.keller@...el.com,
        gal@...dia.com, yinjun.zhang@...igine.com, fei.qin@...igine.com,
        Niklas.Cassel@....com
Subject: [patch net-next v2 07/12] devlink: make devlink_param_driverinit_value_set() return void

From: Jiri Pirko <jiri@...dia.com>

devlink_param_driverinit_value_set() currently returns int with possible
error, but no user is checking it anyway. The only reason for a fail is
a driver bug. So convert the function to return void and put WARN_ONs
on error paths.

Signed-off-by: Jiri Pirko <jiri@...dia.com>
Reviewed-by: Jakub Kicinski <kuba@...nel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
---
 include/net/devlink.h  |  4 ++--
 net/devlink/leftover.c | 15 +++++++--------
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index cf74b6391896..e0d773dfa637 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1775,8 +1775,8 @@ void devlink_params_unregister(struct devlink *devlink,
 			       size_t params_count);
 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
 				       union devlink_param_value *init_val);
-int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
-				       union devlink_param_value init_val);
+void devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
+					union devlink_param_value init_val);
 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
 struct devlink_region *devl_region_create(struct devlink *devlink,
 					  const struct devlink_region_ops *ops,
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index fca2b6661362..693470af548f 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -10931,18 +10931,18 @@ EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
  *	This function should be used by the driver to set driverinit
  *	configuration mode default value.
  */
-int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
-				       union devlink_param_value init_val)
+void devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
+					union devlink_param_value init_val)
 {
 	struct devlink_param_item *param_item;
 
 	param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
-	if (!param_item)
-		return -EINVAL;
+	if (WARN_ON(!param_item))
+		return;
 
-	if (!devlink_param_cmode_is_supported(param_item->param,
-					      DEVLINK_PARAM_CMODE_DRIVERINIT))
-		return -EOPNOTSUPP;
+	if (WARN_ON(!devlink_param_cmode_is_supported(param_item->param,
+						      DEVLINK_PARAM_CMODE_DRIVERINIT)))
+		return;
 
 	if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
 		strcpy(param_item->driverinit_value.vstr, init_val.vstr);
@@ -10951,7 +10951,6 @@ int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
 	param_item->driverinit_value_valid = true;
 
 	devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
-	return 0;
 }
 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
 
-- 
2.39.0