Reset gpio is optional and it does not have to be defined for all boards.
So in mvebu_pcie_powerdown() like in mvebu_pcie_powerup() check that reset
gpio is defined prior usage to prevent NULL pointer dereference.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
drivers/pci/controller/pci-mvebu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index 153a64676bc9..58607cbe84c8 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -947,7 +947,8 @@ static int mvebu_pcie_powerup(struct mvebu_pcie_port *port)
*/
static void mvebu_pcie_powerdown(struct mvebu_pcie_port *port)
{
- gpiod_set_value_cansleep(port->reset_gpio, 1);
+ if (port->reset_gpio)
+ gpiod_set_value_cansleep(port->reset_gpio, 1);
clk_disable_unprepare(port->clk);
}
--
2.20.1
