wifi: iwlwifi: make iwl_uefi_get_uats_table() return void

This sets both fwrt->uats_valid and returns 0, but in the
static inline it returns 0 without setting uats_valid,
which is confusing and the iwlmvm code misbehaves in this
case.

Since it already sets uats_valid, just remove the extra
return value.

Reported-by: Bjoern A. Zeeb <bz@FreeBSD.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20250505215513.e981a7911228.Ic94b5e03e2053a08b84cabeb58ce3b6598fd9fc6@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>

4 files changed, 12 insertions, 22 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
index ce17424f3a60..ce68d96c31b8 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
@@ -410,8 +410,8 @@ static int iwl_uefi_uats_parse(struct uefi_cnv_wlan_uats_data *uats_data,
 	return 0;
 }
 
-int iwl_uefi_get_uats_table(struct iwl_trans *trans,
-			    struct iwl_fw_runtime *fwrt)
+void iwl_uefi_get_uats_table(struct iwl_trans *trans,
+			     struct iwl_fw_runtime *fwrt)
 {
 	struct uefi_cnv_wlan_uats_data *data;
 	int ret;
@@ -419,17 +419,12 @@ int iwl_uefi_get_uats_table(struct iwl_trans *trans,
 	data = iwl_uefi_get_verified_variable(trans, IWL_UEFI_UATS_NAME,
 					      "UATS", sizeof(*data), NULL);
 	if (IS_ERR(data))
-		return -EINVAL;
+		return;
 
 	ret = iwl_uefi_uats_parse(data, fwrt);
-	if (ret < 0) {
+	if (ret < 0)
 		IWL_DEBUG_FW(trans, "Cannot read UATS table. rev is invalid\n");
-		kfree(data);
-		return ret;
-	}
-
 	kfree(data);
-	return 0;
 }
 IWL_EXPORT_SYMBOL(iwl_uefi_get_uats_table);
 
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
index 81df7020b2c7..5a4c557e47c7 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
@@ -272,8 +272,8 @@ int iwl_uefi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value);
 int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func,
 		     u32 *value);
 void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt);
-int iwl_uefi_get_uats_table(struct iwl_trans *trans,
-			    struct iwl_fw_runtime *fwrt);
+void iwl_uefi_get_uats_table(struct iwl_trans *trans,
+			     struct iwl_fw_runtime *fwrt);
 int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt);
 int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value);
 int iwl_uefi_get_phy_filters(struct iwl_fw_runtime *fwrt);
@@ -368,11 +368,9 @@ void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwr
 {
 }
 
-static inline
-int iwl_uefi_get_uats_table(struct iwl_trans *trans,
-			    struct iwl_fw_runtime *fwrt)
+static inline void
+iwl_uefi_get_uats_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt)
 {
-	return 0;
 }
 
 static inline
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c b/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
index fa9f8ac14631..326c300470ea 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
@@ -63,9 +63,7 @@ void iwl_mld_get_bios_tables(struct iwl_mld *mld)
 		/* we don't fail if the table is not available */
 	}
 
-	ret = iwl_uefi_get_uats_table(mld->trans, &mld->fwrt);
-	if (ret)
-		IWL_DEBUG_RADIO(mld, "failed to read UATS table (%d)\n", ret);
+	iwl_uefi_get_uats_table(mld->trans, &mld->fwrt);
 
 	iwl_bios_get_phy_filters(&mld->fwrt);
 }
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 5d2cafc44a7a..d3ec554d4eba 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -511,11 +511,10 @@ static void iwl_mvm_uats_init(struct iwl_mvm *mvm)
 		return;
 	}
 
-	ret = iwl_uefi_get_uats_table(mvm->trans, &mvm->fwrt);
-	if (ret < 0) {
-		IWL_DEBUG_FW(mvm, "failed to read UATS table (%d)\n", ret);
+	iwl_uefi_get_uats_table(mvm->trans, &mvm->fwrt);
+
+	if (!mvm->fwrt.uats_valid)
 		return;
-	}
 
 	ret = iwl_mvm_send_cmd(mvm, &cmd);
 	if (ret < 0)