diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
index abc80949e1ddbea4bb8a47941f9ab5cf278f3113..f82b16a65dee1b09cf26a669906b579eaba1b300 100644
--- a/drivers/clk/at91/clk-generated.c
+++ b/drivers/clk/at91/clk-generated.c
@@ -268,13 +268,13 @@ void __init of_sama5d2_clk_generated_setup(struct device_node *np,
 	u32 id;
 	const char *name;
 	struct clk *clk;
-	int num_parents;
+	unsigned int num_parents;
 	const char *parent_names[GENERATED_SOURCE_MAX];
 	struct device_node *gcknp;
 	struct clk_range range = CLK_RANGE(0, 0);
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > GENERATED_SOURCE_MAX)
+	if (num_parents == 0 || num_parents > GENERATED_SOURCE_MAX)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c
index fd7247deabdc3de9cdf8ab0e4fb67d0c6775ef3e..b85f43529396af902a15952cb081ef29daf601bb 100644
--- a/drivers/clk/at91/clk-main.c
+++ b/drivers/clk/at91/clk-main.c
@@ -611,12 +611,12 @@ void __init of_at91sam9x5_clk_main_setup(struct device_node *np,
 {
 	struct clk *clk;
 	const char *parent_names[2];
-	int num_parents;
+	unsigned int num_parents;
 	unsigned int irq;
 	const char *name = np->name;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > 2)
+	if (num_parents == 0 || num_parents > 2)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index 620ea323356b62145c4f7ef7f1d19511c5832015..016fe110b5baf3995e5f4a4100e246b1dec5ad40 100644
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -221,14 +221,14 @@ of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
 			 const struct clk_master_layout *layout)
 {
 	struct clk *clk;
-	int num_parents;
+	unsigned int num_parents;
 	unsigned int irq;
 	const char *parent_names[MASTER_SOURCE_MAX];
 	const char *name = np->name;
 	struct clk_master_characteristics *characteristics;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > MASTER_SOURCE_MAX)
+	if (num_parents == 0 || num_parents > MASTER_SOURCE_MAX)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c
index 14b270b85fec277a6fdea1ad0df260eeee95f27b..b955fb81876f8a31e739d48fe97b8ea13fe3d5b3 100644
--- a/drivers/clk/at91/clk-programmable.c
+++ b/drivers/clk/at91/clk-programmable.c
@@ -232,13 +232,13 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
 	int num;
 	u32 id;
 	struct clk *clk;
-	int num_parents;
+	unsigned int num_parents;
 	const char *parent_names[PROG_SOURCE_MAX];
 	const char *name;
 	struct device_node *progclknp;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > PROG_SOURCE_MAX)
+	if (num_parents == 0 || num_parents > PROG_SOURCE_MAX)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
diff --git a/drivers/clk/at91/clk-slow.c b/drivers/clk/at91/clk-slow.c
index 6f99a530ead6002d916ef67a42620ced1836d1fa..67b304726d0687b490f6e82328403a8eadecfc0a 100644
--- a/drivers/clk/at91/clk-slow.c
+++ b/drivers/clk/at91/clk-slow.c
@@ -366,11 +366,11 @@ void __init of_at91sam9x5_clk_slow_setup(struct device_node *np,
 {
 	struct clk *clk;
 	const char *parent_names[2];
-	int num_parents;
+	unsigned int num_parents;
 	const char *name = np->name;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > 2)
+	if (num_parents == 0 || num_parents > 2)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
@@ -437,7 +437,7 @@ void __init of_at91sam9260_clk_slow_setup(struct device_node *np,
 {
 	struct clk *clk;
 	const char *parent_names[2];
-	int num_parents;
+	unsigned int num_parents;
 	const char *name = np->name;
 
 	num_parents = of_clk_get_parent_count(np);
diff --git a/drivers/clk/at91/clk-smd.c b/drivers/clk/at91/clk-smd.c
index a7f8501cfa056222a103c1e0f05a442521f68eae..f525830ed5a16018fe1e20bed9777e7aa687ebeb 100644
--- a/drivers/clk/at91/clk-smd.c
+++ b/drivers/clk/at91/clk-smd.c
@@ -145,12 +145,12 @@ void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
 					struct at91_pmc *pmc)
 {
 	struct clk *clk;
-	int num_parents;
+	unsigned int num_parents;
 	const char *parent_names[SMD_SOURCE_MAX];
 	const char *name = np->name;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > SMD_SOURCE_MAX)
+	if (num_parents == 0 || num_parents > SMD_SOURCE_MAX)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
index 8ab8502778a282bac38b56ce9ecb7cd92c8962e2..be1c7f531837a65a2ac6d994cc589705ac3dfbec 100644
--- a/drivers/clk/at91/clk-usb.c
+++ b/drivers/clk/at91/clk-usb.c
@@ -373,12 +373,12 @@ void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
 					struct at91_pmc *pmc)
 {
 	struct clk *clk;
-	int num_parents;
+	unsigned int num_parents;
 	const char *parent_names[USB_SOURCE_MAX];
 	const char *name = np->name;
 
 	num_parents = of_clk_get_parent_count(np);
-	if (num_parents <= 0 || num_parents > USB_SOURCE_MAX)
+	if (num_parents == 0 || num_parents > USB_SOURCE_MAX)
 		return;
 
 	of_clk_parent_fill(np, parent_names, num_parents);