net: atlantic: simplify hw_get_fw_version() usage

hw_get_fw_version() never fails, so this patch simplifies its
usage by utilizing return value instead of output argument.
Signed-off-by: Nikita Danilov <ndanilov@marvell.com>
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

@@ -259,7 +259,7 @@ struct aq_hw_ops {
 
 	struct aq_stats_s *(*hw_get_hw_stats)(struct aq_hw_s *self);
 
-	int (*hw_get_fw_version)(struct aq_hw_s *self, u32 *fw_version);
+	u32 (*hw_get_fw_version)(struct aq_hw_s *self);
 
 	int (*hw_set_offload)(struct aq_hw_s *self,
 			      struct aq_nic_cfg_s *aq_nic_cfg);

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -1032,11 +1032,7 @@ struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
 
 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
 {
-	u32 fw_version = 0U;
-
-	self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
-
-	return fw_version;
+	return self->aq_hw_ops->hw_get_fw_version(self->aq_hw);
 }
 
 int aq_nic_set_loopback(struct aq_nic_s *self)

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c

@@ -70,7 +70,7 @@ int hw_atl_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops)
 	hw_atl_utils_hw_chip_features_init(self,
 					   &self->chip_features);
 
-	hw_atl_utils_get_fw_version(self, &self->fw_ver_actual);
+	self->fw_ver_actual = hw_atl_utils_get_fw_version(self);
 
 	if (hw_atl_utils_ver_match(HW_ATL_FW_VER_1X,
 				   self->fw_ver_actual) == 0) {
@@ -915,11 +915,9 @@ int hw_atl_utils_hw_get_regs(struct aq_hw_s *self,
 	return 0;
 }
 
-int hw_atl_utils_get_fw_version(struct aq_hw_s *self, u32 *fw_version)
+u32 hw_atl_utils_get_fw_version(struct aq_hw_s *self)
 {
-	*fw_version = aq_hw_read_reg(self, 0x18U);
-
-	return 0;
+	return aq_hw_read_reg(self, HW_ATL_MPI_FW_VERSION);
 }
 
 static int aq_fw1x_set_wake_magic(struct aq_hw_s *self, bool wol_enabled,

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h

@@ -622,7 +622,7 @@ int hw_atl_utils_hw_set_power(struct aq_hw_s *self,
 
 int hw_atl_utils_hw_deinit(struct aq_hw_s *self);
 
-int hw_atl_utils_get_fw_version(struct aq_hw_s *self, u32 *fw_version);
+u32 hw_atl_utils_get_fw_version(struct aq_hw_s *self);
 
 int hw_atl_utils_update_stats(struct aq_hw_s *self);