Before calling the callback function, it needs to check whether
init_clk_resources is assigned or not.
Otherwise, it can be occurred the NULL pointer dereference when
init_clk_resources is not assigned.
Even though init_clk_resources is assigned now, it needs to prevent the
potential NULL pointer dereference in future.
Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
---
drivers/pci/dwc/pci-exynos.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/dwc/pci-exynos.c
index 56f32aeebd0a..39f08881f9a4 100644
--- a/drivers/pci/dwc/pci-exynos.c
+++ b/drivers/pci/dwc/pci-exynos.c
@@ -499,7 +499,8 @@ static int __init exynos_pcie_probe(struct platform_device *pdev)
return ret;
}
- if (ep->ops && ep->ops->get_clk_resources) {
+ if (ep->ops && ep->ops->get_clk_resources &&
+ ep->ops->init_clk_resources) {
ret = ep->ops->get_clk_resources(ep);
if (ret)
return ret;
--
2.15.1
