--- drivers/hwmon/dell-smm-hwmon.c	2017-06-17 06:43:47.000000000 +0200
+++ drivers/hwmon/dell-smm-hwmon.c.modded	2017-06-22 17:56:45.768725404 +0200
@@ -41,6 +41,8 @@
 
 #include <linux/i8k.h>
 
+#define I8K_SMM		_IOWR('i', 0x88, size_t)
+
 #define I8K_SMM_FN_STATUS	0x0025
 #define I8K_SMM_POWER_STATUS	0x0069
 #define I8K_SMM_SET_FAN		0x01a3
@@ -409,6 +411,18 @@
 	return (regs.eax & 0xff) == I8K_POWER_AC ? I8K_AC : I8K_BATTERY;
 }
 
+static int i8k_smm_raw(int eax,int ebx,int ecx,int edx,int esi,int edi)
+{
+	struct smm_regs regs = { .eax=eax, .ebx=ebx, .ecx=ecx, .edx=edx, .esi=esi, .edi=edi};
+	int rc;
+
+	rc = i8k_smm(&regs);
+	if (rc < 0)
+		return rc;
+
+	return 0;
+}
+
 /*
  * Procfs interface
  */
@@ -420,6 +434,7 @@
 	int speed;
 	unsigned char buff[16];
 	int __user *argp = (int __user *)arg;
+	int eax; int ebx; int ecx; int edx; int esi; int edi;
 
 	if (!argp)
 		return -EINVAL;
@@ -481,6 +496,28 @@
 		val = i8k_set_fan(val, speed);
 		break;
 
+	case I8K_SMM:
+		if (copy_from_user(&eax, argp, sizeof(int)))
+			return -EFAULT;
+
+		if (copy_from_user(&ebx, argp+1, sizeof(int)))
+			return -EFAULT;
+
+		if (copy_from_user(&ecx, argp+2, sizeof(int)))
+			return -EFAULT;
+
+		if (copy_from_user(&edx, argp+3, sizeof(int)))
+			return -EFAULT;
+
+		if (copy_from_user(&esi, argp+4, sizeof(int)))
+			return -EFAULT;
+
+		if (copy_from_user(&edi, argp+5, sizeof(int)))
+			return -EFAULT;
+
+		val = i8k_smm_raw(eax,ebx,ecx,edx,esi,edi);	
+		break;		
+
 	default:
 		return -EINVAL;
 	}