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--- driver/adv_main.c.orig 2019-03-10 20:06:08.695818531 -0400
+++ driver/adv_main.c 2019-03-10 20:11:15.161215515 -0400
@@ -75,14 +75,21 @@ long adv_proc_ioctl(struct file *filp, u
if(_IOC_NR(cmd) > ADVVCOM_IOCMAX){
printk("%s(%d) cmd = %x\n", __func__, __LINE__, cmd);
return -ENOTTY;
}
+#include <linux/version.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+#define compat_access_ok(u,v,w) access_ok(v,w)
+#else
+#define compat_access_ok(u,v,w) access_ok(u,v,w)
+#endif
+
if (_IOC_DIR(cmd) & _IOC_READ){
- err = !access_ok(VERIFY_WRITE, (void __user *)arg, _IOC_SIZE(cmd));
+ err = !compat_access_ok(VERIFY_WRITE, (void __user *)arg, _IOC_SIZE(cmd));
}else if (_IOC_DIR(cmd) & _IOC_WRITE){
- err = !access_ok(VERIFY_READ, (void __user *)arg, _IOC_SIZE(cmd));
+ err = !compat_access_ok(VERIFY_READ, (void __user *)arg, _IOC_SIZE(cmd));
}
if (err)
return -EFAULT;
data = filp->private_data;
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