wifi: iwlwifi: honor the enable_ini value

In case the user sets the enable_ini to some preset, we want to honor
the value.

Remove the ops to set the value of the module parameter is runtime, we
don't want to allow to modify the value in runtime since we configure
the firmware once at the beginning on its life.

Fixes: b49c2b252b58 ("iwlwifi: Configure FW debug preset via module param.")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230830112059.5734e0f374bb.I6698eda8ed2112378dd47ac5d62866ebe7a94f77@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 17 insertions, 34 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index 3d87d26845e7..fb5e254757e7 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1795,6 +1795,22 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
 #endif
 
 	drv->trans->dbg.domains_bitmap = IWL_TRANS_FW_DBG_DOMAIN(drv->trans);
+	if (iwlwifi_mod_params.enable_ini != ENABLE_INI) {
+		/* We have a non-default value in the module parameter,
+		 * take its value
+		 */
+		drv->trans->dbg.domains_bitmap &= 0xffff;
+		if (iwlwifi_mod_params.enable_ini != IWL_FW_INI_PRESET_DISABLE) {
+			if (iwlwifi_mod_params.enable_ini > ENABLE_INI) {
+				IWL_ERR(trans,
+					"invalid enable_ini module parameter value: max = %d, using 0 instead\n",
+					ENABLE_INI);
+				iwlwifi_mod_params.enable_ini = 0;
+			}
+			drv->trans->dbg.domains_bitmap =
+				BIT(IWL_FW_DBG_DOMAIN_POS + iwlwifi_mod_params.enable_ini);
+		}
+	}
 
 	ret = iwl_request_firmware(drv, true);
 	if (ret) {
@@ -1843,8 +1859,6 @@ void iwl_drv_stop(struct iwl_drv *drv)
 	kfree(drv);
 }
 
-#define ENABLE_INI	(IWL_DBG_TLV_MAX_PRESET + 1)
-
 /* shared module parameters */
 struct iwl_mod_params iwlwifi_mod_params = {
 	.fw_restart = true,
@@ -1964,38 +1978,7 @@ module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
 MODULE_PARM_DESC(uapsd_disable,
 		 "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
 
-static int enable_ini_set(const char *arg, const struct kernel_param *kp)
-{
-	int ret = 0;
-	bool res;
-	__u32 new_enable_ini;
-
-	/* in case the argument type is a number */
-	ret = kstrtou32(arg, 0, &new_enable_ini);
-	if (!ret) {
-		if (new_enable_ini > ENABLE_INI) {
-			pr_err("enable_ini cannot be %d, in range 0-16\n", new_enable_ini);
-			return -EINVAL;
-		}
-		goto out;
-	}
-
-	/* in case the argument type is boolean */
-	ret = kstrtobool(arg, &res);
-	if (ret)
-		return ret;
-	new_enable_ini = (res ? ENABLE_INI : 0);
-
-out:
-	iwlwifi_mod_params.enable_ini = new_enable_ini;
-	return 0;
-}
-
-static const struct kernel_param_ops enable_ini_ops = {
-	.set = enable_ini_set
-};
-
-module_param_cb(enable_ini, &enable_ini_ops, &iwlwifi_mod_params.enable_ini, 0644);
+module_param_named(enable_ini, iwlwifi_mod_params.enable_ini, uint, 0444);
 MODULE_PARM_DESC(enable_ini,
 		 "0:disable, 1-15:FW_DBG_PRESET Values, 16:enabled without preset value defined,"
 		 "Debug INI TLV FW debug infrastructure (default: 16)");