From: Tony Lindgren tony@atomide.com
[ 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@atomide.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 2813f9ed57c0d..54c8c8644df2e 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]);