From: Tony Lindgren <tony@xxxxxxxxxxx>
[ Upstream commit aaa29bb01cc4bf5a87dbdb219efba3b09f259d8e ]
If we return early before ddata->clocks have been allocated we will get a
NULL pointer dereference in sysc_unprepare(). Let's fix this by returning
early when no clocks are allocated.
Fixes: 0eecc636e5a2 ("bus: ti-sysc: Add minimal TI sysc interconnect target driver")
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/bus/ti-sysc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 2813f9ed57c0..54c8c8644df2 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -1400,6 +1400,9 @@ static void sysc_unprepare(struct sysc *ddata)
{
int i;
+ if (!ddata->clocks)
+ return;
+
for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
if (!IS_ERR_OR_NULL(ddata->clocks[i]))
clk_unprepare(ddata->clocks[i]);
--
2.20.1
