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soc: fsl: guts: reuse machine name from device tree 

Reuse the string machine from the device tree data structure instead
of duplicating the data again.  This also prevents a potential memory
allocation failure that was not handled previously.  Also fixes an early
put of root device node.

Reported-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Li Yang 2019-01-11 15:55:57 -06:00
parent 8a533a7de2
commit 3c0d64e867
1 changed files with 4 additions and 3 deletions
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7
drivers/soc/fsl/guts.c
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@ -32,6 +32,7 @@ struct fsl_soc_die_attr {
static struct guts *guts;
static struct soc_device_attribute soc_dev_attr;
static struct soc_device *soc_dev;
static struct device_node *root;
/* SoC die attribute definition for QorIQ platform */
@ -132,7 +133,7 @@ EXPORT_SYMBOL(fsl_guts_get_svr);
static int fsl_guts_probe(struct platform_device *pdev)
{
struct device_node *root, *np = pdev->dev.of_node;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct resource *res;
const struct fsl_soc_die_attr *soc_die;
@ -155,9 +156,8 @@ 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)
soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
soc_dev_attr.machine = machine;
svr = fsl_guts_get_svr();
soc_die = fsl_soc_die_match(svr, fsl_soc_die);
@ -192,6 +192,7 @@ static int fsl_guts_probe(struct platform_device *pdev)
static int fsl_guts_remove(struct platform_device *dev)
{
soc_device_unregister(soc_dev);
of_node_put(root);
return 0;
}