[PATCH 2/8] clk: cdce925: check return value of kasprintf()

[Claudiu Beznea]

kasprintf() returns a pointer to dynamically allocated memory.
Pointer could be NULL in case allocation fails. Check pointer validity.
Identified with coccinelle (kmerr.cocci script).

Fixes: 19fbbbbcd3a3 ("Add TI CDCE925 I2C controlled clock synthesizer driver")
Depends-on: e665f029a283 ("clk: Convert to using %pOFn instead of device_node.name")
Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
---
 drivers/clk/clk-cdce925.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/clk/clk-cdce925.c b/drivers/clk/clk-cdce925.c
index 6350682f7e6d..87890669297d 100644
--- a/drivers/clk/clk-cdce925.c
+++ b/drivers/clk/clk-cdce925.c
@@ -701,6 +701,10 @@ static int cdce925_probe(struct i2c_client *client)
 	for (i = 0; i < data->chip_info->num_plls; ++i) {
 		pll_clk_name[i] = kasprintf(GFP_KERNEL, "%pOFn.pll%d",
 			client->dev.of_node, i);
+		if (!pll_clk_name[i]) {
+			err = -ENOMEM;
+			goto error;
+		}
 		init.name = pll_clk_name[i];
 		data->pll[i].chip = data;
 		data->pll[i].hw.init = &init;
@@ -742,6 +746,10 @@ static int cdce925_probe(struct i2c_client *client)
 	init.num_parents = 1;
 	init.parent_names = &parent_name; /* Mux Y1 to input */
 	init.name = kasprintf(GFP_KERNEL, "%pOFn.Y1", client->dev.of_node);
+	if (!init.name) {
+		err = -ENOMEM;
+		goto error;
+	}
 	data->clk[0].chip = data;
 	data->clk[0].hw.init = &init;
 	data->clk[0].index = 0;
@@ -760,6 +768,10 @@ static int cdce925_probe(struct i2c_client *client)
 	for (i = 1; i < data->chip_info->num_outputs; ++i) {
 		init.name = kasprintf(GFP_KERNEL, "%pOFn.Y%d",
 			client->dev.of_node, i+1);
+		if (!init.name) {
+			err = -ENOMEM;
+			goto error;
+		}
 		data->clk[i].chip = data;
 		data->clk[i].hw.init = &init;
 		data->clk[i].index = i;
-- 
2.34.1