openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

dt: protect against NULL matches passed to of_match_node() 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/of/base.c
View File

@ -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 of_device_id *of_match_node(const struct of_device_id *matches,
const struct device_node *node) const struct device_node *node)
{ {
if (!matches)
return NULL;
while (matches->name[0] || matches->type[0] || matches->compatible[0]) { while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
int match = 1; int match = 1;
if (matches->name[0]) if (matches->name[0])