[PATCH 5.10 171/509] clk: ti: clkctrl: check return value of kasprintf()

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From: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>

[ Upstream commit bd46cd0b802d9c9576ca78007aa084ae3e74907b ]

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: 852049594b9a ("clk: ti: clkctrl: convert subclocks to use proper names also")
Fixes: 6c3090520554 ("clk: ti: clkctrl: Fix hidden dependency to node name")
Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230530093913.1656095-8-claudiu.beznea@xxxxxxxxxxxxx
Reviewed-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/clk/ti/clkctrl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c
index 864c484bde1b4..157abc46dcf44 100644
--- a/drivers/clk/ti/clkctrl.c
+++ b/drivers/clk/ti/clkctrl.c
@@ -267,6 +267,9 @@ static const char * __init clkctrl_get_clock_name(struct device_node *np,
 	if (clkctrl_name && !legacy_naming) {
 		clock_name = kasprintf(GFP_KERNEL, "%s-clkctrl:%04x:%d",
 				       clkctrl_name, offset, index);
+		if (!clock_name)
+			return NULL;
+
 		strreplace(clock_name, '_', '-');
 
 		return clock_name;
@@ -598,6 +601,10 @@ static void __init _ti_omap4_clkctrl_setup(struct device_node *node)
 	if (clkctrl_name) {
 		provider->clkdm_name = kasprintf(GFP_KERNEL,
 						 "%s_clkdm", clkctrl_name);
+		if (!provider->clkdm_name) {
+			kfree(provider);
+			return;
+		}
 		goto clkdm_found;
 	}
 
-- 
2.39.2






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