5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
commit d9d3490c48df572edefc0b64655259eefdcbb9be upstream.
Up until now, the necessary scm availability check has not been
performed, leading to possible null pointer dereferences (which did
happen for me on RB1).
Fix that.
Fixes: 53bca371cdf7 ("thermal/drivers/qcom: Add support for LMh driver")
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240308-topic-rb1_lmh-v2-2-bac3914b0fe3@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thermal/qcom/lmh.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/thermal/qcom/lmh.c
+++ b/drivers/thermal/qcom/lmh.c
@@ -92,6 +92,9 @@ static int lmh_probe(struct platform_dev
int temp_low, temp_high, temp_arm, cpu_id, ret;
u32 node_id;
+ if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
lmh_data = devm_kzalloc(dev, sizeof(*lmh_data), GFP_KERNEL);
if (!lmh_data)
return -ENOMEM;
