eth: yt6801: donot assigning value of variable of type to itself

Fix follow compile errors with clang-19:

drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:500:8: error: explicitly assigning value of variable of type 'struct fxgmac_pdata *' to itself [-Werror,-Wself-assign]
  500 |         pdata = pdata;
      |         ~~~~~ ^ ~~~~~
drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:611:8: error: explicitly assigning value of variable of type 'struct fxgmac_pdata *' to itself [-Werror,-Wself-assign]
  611 |         pdata = pdata;
      |         ~~~~~ ^ ~~~~~
drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:1321:14: error: explicitly assigning value of variable of type 'int' to itself [-Werror,-Wself-assign]
 1321 |         start_index = start_index;
      |         ~~~~~~~~~~~ ^ ~~~~~~~~~~~
drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:1618:8: error: explicitly assigning value of variable of type 'struct fxgmac_pdata *' to itself [-Werror,-Wself-assign]
 1618 |         pdata = pdata;
      |         ~~~~~ ^ ~~~~~
drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:2628:7: error: explicitly assigning value of variable of type 'unsigned int' to itself [-Werror,-Wself-assign]
 2628 |         type = type;
      |         ~~~~ ^ ~~~~
drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c:5019:9: error: explicitly assigning value of variable of type 'int' to itself [-Werror,-Wself-assign]
 5019 |         int_id = int_id;
      |         ~~~~~~ ^ ~~~~~~
6 errors generated.

Signed-off-by: WangYuli <[email protected]>

drivers/net/ethernet/motorcomm/yt6801/fuxi-gmac-hw.c

@@ -486,23 +486,23 @@ static void fxgmac_config_multicast_mac_hash_table(struct fxgmac_pdata *pdata,
 	writereg(pdata->pAdapter, regval, pdata->mac_regs + hash_reg);
 }
 
-static void fxgmac_set_mac_hash_table(struct fxgmac_pdata *pdata)
-{
 #ifndef DPDK
 #if FUXI_MAC_HASH_TABLE
+static void fxgmac_set_mac_hash_table(struct fxgmac_pdata *pdata)
+{
 	struct net_device *netdev = pdata->netdev;
 	struct netdev_hw_addr *ha;
 
 	netdev_for_each_mc_addr(ha, netdev) {
 		fxgmac_config_multicast_mac_hash_table(pdata, ha->addr, 1);
 	}
-#endif
-	pdata = pdata;
-
+}
 #else
-	(void)pdata;
-#endif
+static inline void fxgmac_set_mac_hash_table(void)
+{
 }
+#endif /* FUXI_MAC_HASH_TABLE */
+#endif /* DPDK */
 
 static int fxgmac_add_mac_addresses(struct fxgmac_pdata *pdata)
 {
@@ -608,8 +608,6 @@ static void fxgmac_prepare_tx_stop(struct fxgmac_pdata *pdata,
 	unsigned long tx_timeout;
 	unsigned int tx_status;
 
-	pdata = pdata;
-
 	/* Calculate the status register to read and the position within */
 	if (channel->queue_index < DMA_DSRX_FIRST_QUEUE) {
 		tx_dsr = DMA_DSR0;
@@ -1318,7 +1316,6 @@ static void fxgmac_tx_desc_init(struct fxgmac_channel *channel)
 	struct fxgmac_desc_data *desc_data;
 	int start_index = ring->cur;
 	unsigned int i;
-	start_index = start_index;
 
 	/* Initialize all descriptors */
 	for (i = 0; i < ring->dma_desc_count; i++) {
@@ -1613,9 +1610,8 @@ static void fxgmac_config_rx_fup_enable(struct fxgmac_pdata *pdata)
 	}
 }
 
-static int fxgmac_config_tx_coalesce(struct fxgmac_pdata *pdata)
+static inline int fxgmac_config_tx_coalesce(struct fxgmac_pdata *pdata)
 {
-	pdata = pdata;
 	return 0;
 }
 
@@ -2625,7 +2621,6 @@ static int fxgmac_write_rss_reg(struct fxgmac_pdata *pdata, unsigned int type,
 				unsigned int index, unsigned int val)
 {
 	int ret = 0;
-	type = type;
 
 	writereg(pdata->pAdapter, val, (pdata->base_mem + index));
 
@@ -5016,7 +5011,6 @@ static int fxgmac_dismiss_DMA_int(struct fxgmac_channel *channel, int int_id)
 {
 	unsigned int dma_ch_ier;
 
-	int_id = int_id;
 	dma_ch_ier = readreg(channel->pdata->pAdapter,
 			     FXGMAC_DMA_REG(channel, DMA_CH_SR /*1160*/));
 	writereg(channel->pdata->pAdapter, dma_ch_ier,