diff --git a/drivers/infiniband/sw/rdmavt/mad.c b/drivers/infiniband/sw/rdmavt/mad.c
index f6e9977..bba241f 100644
--- a/drivers/infiniband/sw/rdmavt/mad.c
+++ b/drivers/infiniband/sw/rdmavt/mad.c
@@ -74,9 +74,9 @@
 		    u16 *out_mad_pkey_index)
 {
 	/*
-	 * MAD processing is quite different between hfi1 and qib. Therfore this
-	 * is expected to be provided by the driver. Other drivers in the future
-	 * may chose to implement this but it should not be made into a
+	 * MAD processing is quite different between hfi1 and qib. Therefore
+	 * this is expected to be provided by the driver. Other drivers in the
+	 * future may choose to implement this but it should not be made into a
 	 * requirement.
 	 */
 	if (ibport_num_to_idx(ibdev, port_num) < 0)
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 137d22d..838347c 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1630,7 +1630,7 @@
 
 	if (!dev->sync_mode) {
 		/* After EEH recovery or suspend resume, max_msix count
-		 * may change, therfore updating in init as well.
+		 * may change, therefore updating in init as well.
 		 */
 		dev->init->r7.no_of_msix_vectors = cpu_to_le32(dev->max_msix);
 		aac_adapter_start(dev);
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 1dc8627..cb0b7ca 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -1875,8 +1875,8 @@
 **
 ** VC_RESUME_IDLE - Initialise the resume completion at the same time.  The
 **			resume completion is in it's 'done' state whenever
-**			videcore is running.  Therfore, the VC_RESUME_IDLE state
-**			implies that videocore is suspended.
+**			videcore is running.  Therefore, the VC_RESUME_IDLE
+**			state implies that videocore is suspended.
 **			Hence, any thread which needs to wait until videocore is
 **			running can wait on this completion - it will only block
 **			if videocore is suspended.
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index 3aa95a1..56a9860 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -1041,6 +1041,7 @@
 teh||the
 temorary||temporary
 temproarily||temporarily
+therfore||therefore
 thier||their
 threds||threads
 threshhold||threshold