4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Jaehoon Chung <[email protected]> commit b5d6bc90c9129279d363ccbc02ad11e7b657c0b4 upstream. In order to avoid triggering a NULL pointer dereference in exynos_pcie_probe() a check must be put in place to detect if the init_clk_resources hook is initialized before calling it. Add the respective function pointer check in exynos_pcie_probe(). Signed-off-by: Jaehoon Chung <[email protected]> [[email protected]: rewrote the commit log] Signed-off-by: Lorenzo Pieralisi <[email protected]> Signed-off-by: Amit Pundir <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/pci/dwc/pci-exynos.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/pci/dwc/pci-exynos.c +++ b/drivers/pci/dwc/pci-exynos.c @@ -695,7 +695,8 @@ static int __init exynos_pcie_probe(stru 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;
