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clk: vc5: check memory returned by kasprintf()

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[ Upstream commit 144601f622 ]

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: f491276a51 ("clk: vc5: Allow Versaclock driver to support multiple instances")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230530093913.1656095-2-claudiu.beznea@microchip.com
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.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 12:39:06 +03:00
committed by Greg Kroah-Hartman
parent f180408f16
commit d8832e85a1
1 changed files with 29 additions and 0 deletions
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29
drivers/clk/clk-versaclock5.c
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@@ -992,6 +992,11 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
init.name = kasprintf(GFP_KERNEL, "%pOFn.mux", client->dev.of_node);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_mux_ops;
init.flags = 0;
init.parent_names = parent_names;
@@ -1006,6 +1011,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.dbl",
client->dev.of_node);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_dbl_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
@@ -1021,6 +1030,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
/* Register PFD */
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.pfd", client->dev.of_node);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_pfd_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
@@ -1038,6 +1051,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
/* Register PLL */
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.pll", client->dev.of_node);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_pll_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
@@ -1057,6 +1074,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.fod%d",
client->dev.of_node, idx);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_fod_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
@@ -1075,6 +1096,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.out0_sel_i2cb",
client->dev.of_node);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_clk_out_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
@@ -1101,6 +1126,10 @@ static int vc5_probe(struct i2c_client *client, const struct i2c_device_id *id)
memset(&init, 0, sizeof(init));
init.name = kasprintf(GFP_KERNEL, "%pOFn.out%d",
client->dev.of_node, idx + 1);
if (!init.name) {
ret = -ENOMEM;
goto err_clk;
}
init.ops = &vc5_clk_out_ops;
init.flags = CLK_SET_RATE_PARENT;
init.parent_names = parent_names;