[PATCH 13/20] media: iris: Fix NULL pointer dereference

[Dikshita Agarwal]

A warning reported by smatch indicated a possible null pointer
dereference where one of the arguments to API
"iris_hfi_gen2_handle_system_error" could sometimes be null.

To fix this, add a check to validate that the argument passed is not
null before accessing its members.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: fb583a214337 ("media: iris: introduce host firmware interface with necessary hooks")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Closes: https://lore.kernel.org/linux-media/634cc9b8-f099-4b54-8556-d879fb2b5169@stanley.mountain/
Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>
---
 drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c b/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c
index de823a314efd..2267e220c9ea 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c
@@ -267,7 +267,8 @@ static int iris_hfi_gen2_handle_system_error(struct iris_core *core,
 {
 	struct iris_inst *instance;
 
-	dev_err(core->dev, "received system error of type %#x\n", pkt->type);
+	if (pkt)
+		dev_err(core->dev, "received system error of type %#x\n", pkt->type);
 
 	core->state = IRIS_CORE_ERROR;
 

-- 
2.34.1