diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 7a13790b5bfe5e20feb8db54edd2fc4ef738187d..0470334d6a81cf6960efd0219b7553aa8c8702b5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -455,7 +455,7 @@ struct iwl_trans_ops {
 	int (*read_mem)(struct iwl_trans *trans, u32 addr,
 			void *buf, int dwords);
 	int (*write_mem)(struct iwl_trans *trans, u32 addr,
-			 void *buf, int dwords);
+			 const void *buf, int dwords);
 	void (*configure)(struct iwl_trans *trans,
 			  const struct iwl_trans_config *trans_cfg);
 	void (*set_pmi)(struct iwl_trans *trans, bool state);
@@ -761,7 +761,7 @@ static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr)
 }
 
 static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr,
-				      void *buf, int dwords)
+				      const void *buf, int dwords)
 {
 	return trans->ops->write_mem(trans, addr, buf, dwords);
 }
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index e5365196e5fe8975535de59d81aa141e4b9e5cf7..a785f49df9b1fa8efcabe3271baf53a64f2ca5b9 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -924,11 +924,11 @@ static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
 }
 
 static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr,
-				    void *buf, int dwords)
+				    const void *buf, int dwords)
 {
 	unsigned long flags;
 	int offs, ret = 0;
-	u32 *vals = buf;
+	const u32 *vals = buf;
 
 	if (iwl_trans_grab_nic_access(trans, false, &flags)) {
 		iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr);