diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 9e4c07eb889b..8765eedfcf54 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -373,13 +373,10 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 
 static int byt_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
 {
-	u64 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
-	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX,
-			    cmd | SHIM_BYT_IPCX_BUSY);
+	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index e59d180da7e2..fd86269b5037 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -151,13 +151,11 @@ static void cnl_ipc_dsp_done(struct snd_sof_dev *sdev)
 static int cnl_ipc_send_msg(struct snd_sof_dev *sdev,
 			    struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR,
-			  cmd | CNL_DSP_REG_HIPCIDR_BUSY);
+			  CNL_DSP_REG_HIPCIDR_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 51b285103394..728dd1e075a4 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -56,13 +56,11 @@ static void hda_dsp_ipc_dsp_done(struct snd_sof_dev *sdev)
 
 int hda_dsp_ipc_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send IPC message to DSP */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI,
-			  cmd | HDA_DSP_REG_HIPCI_BUSY);
+			  HDA_DSP_REG_HIPCI_BUSY);
 
 	return 0;
 }