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clk: si5341: check return value of {devm_}kasprintf()

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[ Upstream commit 36e4ef82016a2b785cf2317eade77e76699b7bff ]

{devm_}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: 3044a860fd ("clk: Add Si5341/Si5340 driver")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230530093913.1656095-5-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2023-05-30 12:39:09 +03:00 • committed by Greg Kroah-Hartman
parent 0a89a906ba
commit 11581850a7
1 changed files with 8 additions and 0 deletions
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8
drivers/clk/clk-si5341.c
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@ -1697,6 +1697,10 @@ static int si5341_probe(struct i2c_client *client)
for (i = 0; i < data->num_synth; ++i) { for (i = 0; i < data->num_synth; ++i) {
synth_clock_names[i] = devm_kasprintf(&client->dev, GFP_KERNEL, synth_clock_names[i] = devm_kasprintf(&client->dev, GFP_KERNEL,
"%s.N%u", client->dev.of_node->name, i); "%s.N%u", client->dev.of_node->name, i);
if (!synth_clock_names[i]) {
err = -ENOMEM;
goto free_clk_names;
}
init.name = synth_clock_names[i]; init.name = synth_clock_names[i];
data->synth[i].index = i; data->synth[i].index = i;
data->synth[i].data = data; data->synth[i].data = data;
@ -1715,6 +1719,10 @@ static int si5341_probe(struct i2c_client *client)
for (i = 0; i < data->num_outputs; ++i) { for (i = 0; i < data->num_outputs; ++i) {
init.name = kasprintf(GFP_KERNEL, "%s.%d", init.name = kasprintf(GFP_KERNEL, "%s.%d",
client->dev.of_node->name, i); client->dev.of_node->name, i);
if (!init.name) {
err = -ENOMEM;
goto free_clk_names;
}
init.flags = config[i].synth_master ? CLK_SET_RATE_PARENT : 0; init.flags = config[i].synth_master ? CLK_SET_RATE_PARENT : 0;
data->clk[i].index = i; data->clk[i].index = i;
data->clk[i].data = data; data->clk[i].data = data;