[PATCH] usb: typec: tipd: Prevent uninitialized event{1,2} in IRQ handler

From: Sven Peter
Date: Wed Nov 02 2022 - 12:23:00 EST


If reading TPS_REG_INT_EVENT1/2 fails in the interrupt handler event1
and event2 may be uninitialized when they are used to determine
IRQ_HANDLED vs. IRQ_NONE in the error path.

Fixes: c7260e29dd20 ("usb: typec: tipd: Add short-circuit for no irqs")
Fixes: 45188f27b3d0 ("usb: typec: tipd: Add support for Apple CD321X")
Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
---
drivers/usb/typec/tipd/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index b637e8b378b3..2a77bab948f5 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -474,7 +474,7 @@ static void tps6598x_handle_plug_event(struct tps6598x *tps, u32 status)
static irqreturn_t cd321x_interrupt(int irq, void *data)
{
struct tps6598x *tps = data;
- u64 event;
+ u64 event = 0;
u32 status;
int ret;

@@ -519,8 +519,8 @@ static irqreturn_t cd321x_interrupt(int irq, void *data)
static irqreturn_t tps6598x_interrupt(int irq, void *data)
{
struct tps6598x *tps = data;
- u64 event1;
- u64 event2;
+ u64 event1 = 0;
+ u64 event2 = 0;
u32 status;
int ret;

--
2.25.1