--- zzzz-none-000/linux-3.10.107/arch/arm/mach-msm/last_radio_log.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/arm/mach-msm/last_radio_log.c	2021-11-10 11:53:52.000000000 +0000
@@ -31,8 +31,20 @@
 static ssize_t last_radio_log_read(struct file *file, char __user *buf,
 			size_t len, loff_t *offset)
 {
-	return simple_read_from_buffer(buf, len, offset,
-				radio_log_base, radio_log_size);
+	loff_t pos = *offset;
+	ssize_t count;
+
+	if (pos >= radio_log_size)
+		return 0;
+
+	count = min(len, (size_t)(radio_log_size - pos));
+	if (copy_to_user(buf, radio_log_base + pos, count)) {
+		pr_err("%s: copy to user failed\n", __func__);
+		return -EFAULT;
+	}
+
+	*offset += count;
+	return count;
 }
 
 static struct file_operations last_radio_log_fops = {
@@ -55,8 +67,7 @@
 		return;
 	}
 
-	entry = proc_create("last_radio_log", S_IRUGO, NULL,
-				&last_radio_log_fops);
+	entry = create_proc_entry("last_radio_log", S_IFREG | S_IRUGO, NULL);
 	if (!entry) {
 		pr_err("%s: could not create proc entry for radio log\n",
 				__func__);
@@ -66,6 +77,7 @@
 	pr_err("%s: last radio log is %d bytes long\n", __func__,
 		radio_log_size);
 	last_radio_log_fops.owner = owner;
-	proc_set_size(entry, radio_log_size);
+	entry->proc_fops = &last_radio_log_fops;
+	entry->size = radio_log_size;
 }
 EXPORT_SYMBOL(msm_init_last_radio_log);