wifi: atmel: remove unused ioctl function

This function has no callers, and for the past 20 years, the request_firmware
interface has been in place instead of the custom firmware loader.

Acked-by: Kalle Valo <[e-mail]>
Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/net/wireless/atmel/atmel.c

···
 		      { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 
 static void build_wpa_mib(struct atmel_private *priv);
-static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 			       const unsigned char *src, u16 len);
 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
···
 	.ndo_stop		= atmel_close,
 	.ndo_set_mac_address 	= atmel_set_mac_address,
 	.ndo_start_xmit 	= start_tx,
-	.ndo_do_ioctl 		= atmel_ioctl,
 	.ndo_validate_addr	= eth_validate_addr,
 };
 
···
 	.private_args	= (struct iw_priv_args *) atmel_private_args,
 	.get_wireless_stats = atmel_get_wireless_stats
 };
-
-static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
-	int i, rc = 0;
-	struct atmel_private *priv = netdev_priv(dev);
-	struct atmel_priv_ioctl com;
-	struct iwreq *wrq = (struct iwreq *) rq;
-	unsigned char *new_firmware;
-	char domain[REGDOMAINSZ + 1];
-
-	switch (cmd) {
-	case ATMELIDIFC:
-		wrq->u.param.value = ATMELMAGIC;
-		break;
-
-	case ATMELFWL:
-		if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
-			rc = -EFAULT;
-			break;
-		}
-
-		if (!capable(CAP_NET_ADMIN)) {
-			rc = -EPERM;
-			break;
-		}
-
-		new_firmware = memdup_user(com.data, com.len);
-		if (IS_ERR(new_firmware)) {
-			rc = PTR_ERR(new_firmware);
-			break;
-		}
-
-		kfree(priv->firmware);
-
-		priv->firmware = new_firmware;
-		priv->firmware_length = com.len;
-		strncpy(priv->firmware_id, com.id, 31);
-		priv->firmware_id[31] = '\0';
-		break;
-
-	case ATMELRD:
-		if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
-			rc = -EFAULT;
-			break;
-		}
-
-		if (!capable(CAP_NET_ADMIN)) {
-			rc = -EPERM;
-			break;
-		}
-
-		domain[REGDOMAINSZ] = 0;
-		rc = -EINVAL;
-		for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
-			if (!strcasecmp(channel_table[i].name, domain)) {
-				priv->config_reg_domain = channel_table[i].reg_domain;
-				rc = 0;
-			}
-		}
-
-		if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
-			rc = atmel_open(dev);
-		break;
-
-	default:
-		rc = -EOPNOTSUPP;
-	}
-
-	return rc;
-}
 
 struct auth_body {
 	__le16 alg;