--- zzzz-none-000/linux-3.10.107/drivers/media/radio/wl128x/fmdrv_common.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/media/radio/wl128x/fmdrv_common.c	2021-02-04 17:41:59.000000000 +0000
@@ -175,7 +175,7 @@
 	fm_irq_handle_intmsk_cmd_resp
 };
 
-long (*g_st_write) (struct sk_buff *skb);
+static long (*g_st_write) (struct sk_buff *skb);
 static struct completion wait_for_fmdrv_reg_comp;
 
 static inline void fm_irq_call(struct fmdev *fmdev)
@@ -440,7 +440,7 @@
 		 * command with u16 payload - convert to be16
 		 */
 		if (payload != NULL)
-			*(u16 *)payload = cpu_to_be16(*(u16 *)payload);
+			*(__be16 *)payload = cpu_to_be16(*(u16 *)payload);
 
 	} else if (payload != NULL) {
 		fm_cb(skb)->fm_op = *((u8 *)payload + 2);
@@ -595,7 +595,7 @@
 	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
 	memcpy(&fmdev->irq_info.flag, skb->data, fm_evt_hdr->dlen);
 
-	fmdev->irq_info.flag = be16_to_cpu(fmdev->irq_info.flag);
+	fmdev->irq_info.flag = be16_to_cpu((__force __be16)fmdev->irq_info.flag);
 	fmdbg("irq: flag register(0x%x)\n", fmdev->irq_info.flag);
 
 	/* Continue next function in interrupt handler table */
@@ -689,7 +689,6 @@
 static void fm_rdsparse_swapbytes(struct fmdev *fmdev,
 		struct fm_rdsdata_format *rds_format)
 {
-	u8 byte1;
 	u8 index = 0;
 	u8 *rds_buff;
 
@@ -701,9 +700,7 @@
 	if (fmdev->asci_id != 0x6350) {
 		rds_buff = &rds_format->data.groupdatabuff.buff[0];
 		while (index + 1 < FM_RX_RDS_INFO_FIELD_MAX) {
-			byte1 = rds_buff[index];
-			rds_buff[index] = rds_buff[index + 1];
-			rds_buff[index + 1] = byte1;
+			swap(rds_buff[index], rds_buff[index + 1]);
 			index += 2;
 		}
 	}
@@ -715,7 +712,7 @@
 	struct fm_rdsdata_format rds_fmt;
 	struct fm_rds *rds = &fmdev->rx.rds;
 	unsigned long group_idx, flags;
-	u8 *rds_data, meta_data, tmpbuf[3];
+	u8 *rds_data, meta_data, tmpbuf[FM_RDS_BLK_SIZE];
 	u8 type, blk_idx;
 	u16 cur_picode;
 	u32 rds_len;
@@ -764,7 +761,7 @@
 			 * Extract PI code and store in local cache.
 			 * We need this during AF switch processing.
 			 */
-			cur_picode = be16_to_cpu(rds_fmt.data.groupgeneral.pidata);
+			cur_picode = be16_to_cpu((__force __be16)rds_fmt.data.groupgeneral.pidata);
 			if (fmdev->rx.stat_info.picode != cur_picode)
 				fmdev->rx.stat_info.picode = cur_picode;
 
@@ -989,7 +986,7 @@
 	/* Skip header info and copy only response data */
 	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
 	memcpy(&read_freq, skb->data, sizeof(read_freq));
-	read_freq = be16_to_cpu(read_freq);
+	read_freq = be16_to_cpu((__force __be16)read_freq);
 	curr_freq = fmdev->rx.region.bot_freq + ((u32)read_freq * FM_FREQ_MUL);
 
 	jumped_freq = fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx];
@@ -1073,6 +1070,7 @@
 		u8 __user *buf, size_t count)
 {
 	u32 block_count;
+	u8 tmpbuf[FM_RDS_BLK_SIZE];
 	unsigned long flags;
 	int ret;
 
@@ -1087,29 +1085,32 @@
 	}
 
 	/* Calculate block count from byte count */
-	count /= 3;
+	count /= FM_RDS_BLK_SIZE;
 	block_count = 0;
 	ret = 0;
 
-	spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
-
 	while (block_count < count) {
-		if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx)
-			break;
+		spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
 
-		if (copy_to_user(buf, &fmdev->rx.rds.buff[fmdev->rx.rds.rd_idx],
-					FM_RDS_BLK_SIZE))
+		if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx) {
+			spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
 			break;
-
+		}
+		memcpy(tmpbuf, &fmdev->rx.rds.buff[fmdev->rx.rds.rd_idx],
+					FM_RDS_BLK_SIZE);
 		fmdev->rx.rds.rd_idx += FM_RDS_BLK_SIZE;
 		if (fmdev->rx.rds.rd_idx >= fmdev->rx.rds.buf_size)
 			fmdev->rx.rds.rd_idx = 0;
 
+		spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
+
+		if (copy_to_user(buf, tmpbuf, FM_RDS_BLK_SIZE))
+			break;
+
 		block_count++;
 		buf += FM_RDS_BLK_SIZE;
 		ret += FM_RDS_BLK_SIZE;
 	}
-	spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
 	return ret;
 }
 
@@ -1252,7 +1253,7 @@
 		fmerr("Unable to read firmware(%s) content\n", fw_name);
 		return ret;
 	}
-	fmdbg("Firmware(%s) length : %d bytes\n", fw_name, fw_entry->size);
+	fmdbg("Firmware(%s) length : %zu bytes\n", fw_name, fw_entry->size);
 
 	fw_data = (void *)fw_entry->data;
 	fw_len = fw_entry->size;
@@ -1313,7 +1314,8 @@
 /* Does FM power on sequence */
 static int fm_power_up(struct fmdev *fmdev, u8 mode)
 {
-	u16 payload, asic_id, asic_ver;
+	u16 payload;
+	__be16 asic_id, asic_ver;
 	int resp_len, ret;
 	u8 fw_name[50];