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soc: fsl: guts: Add a missing memory allocation failure check 

If 'devm_kstrdup()' fails, we should return -ENOMEM.

While at it, move the 'of_node_put()' call in the error handling path and
after the 'machine' has been copied.
Better safe than sorry.

Fixes: a6fc3b6981 ("soc: fsl: add GUTS driver for QorIQ platforms")
Depends-on: fddacc7ff4dd ("soc: fsl: guts: Revert commit 3c0d64e867ed")
Suggested-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Christophe JAILLET 2021-11-03 21:00:33 +01:00 committed by Li Yang
parent b113737cf1
commit b9abe942cd
1 changed files with 7 additions and 2 deletions
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9
drivers/soc/fsl/guts.c
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@ -158,9 +158,14 @@ static int fsl_guts_probe(struct platform_device *pdev)
root = of_find_node_by_path("/");
if (of_property_read_string(root, "model", &machine))
of_property_read_string_index(root, "compatible", 0, &machine);
of_node_put(root);
if (machine)
if (machine) {
soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
if (!soc_dev_attr.machine) {
of_node_put(root);
return -ENOMEM;
}
}
of_node_put(root);
svr = fsl_guts_get_svr();
soc_die = fsl_soc_die_match(svr, fsl_soc_die);