diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index b874458..2546fa7 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -107,6 +107,13 @@
 				desc->name, desc->gpio_owner, owner);
 			goto out;
 		}
+		if (pctldev->desc->strict && desc->mux_usecount &&
+		    strcmp(desc->mux_owner, owner)) {
+			dev_err(pctldev->dev,
+				"pin %s already requested by %s; cannot claim for %s\n",
+				desc->name, desc->mux_owner, owner);
+			goto out;
+		}
 
 		desc->gpio_owner = owner;
 	} else {
@@ -116,6 +123,12 @@
 				desc->name, desc->mux_owner, owner);
 			goto out;
 		}
+		if (pctldev->desc->strict && desc->gpio_owner) {
+			dev_err(pctldev->dev,
+				"pin %s already requested by %s; cannot claim for %s\n",
+				desc->name, desc->gpio_owner, owner);
+			goto out;
+		}
 
 		desc->mux_usecount++;
 		if (desc->mux_usecount > 1)