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dt: protect against NULL matches passed to of_match_node()

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There are a few use cases where it is convenient to pass NULL to
of_match_node() and have it fail gracefully.  The patch adds a null
check to the beginning so taht it does so.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely 2011-03-18 10:21:29 -06:00
parent 38e9e21dac
commit a52f07ecd1
1 changed files with 3 additions and 0 deletions
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3
drivers/of/base.c
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@ -496,6 +496,9 @@ EXPORT_SYMBOL(of_find_node_with_property);
const struct of_device_id *of_match_node(const struct of_device_id *matches,
const struct device_node *node)
{
if (!matches)
return NULL;
while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
int match = 1;
if (matches->name[0])