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thermal/drivers/qcom/lmh: Check for SCM availability at probe

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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: 53bca371cd ("thermal/drivers/qcom: Add support for LMh driver")
Cc: <stable@vger.kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240308-topic-rb1_lmh-v2-2-bac3914b0fe3@linaro.org
This commit is contained in:
Konrad Dybcio 2024-03-09 14:15:03 +01:00 committed by Daniel Lezcano
parent c0f14ec952
commit d9d3490c48
1 changed files with 3 additions and 0 deletions
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3
drivers/thermal/qcom/lmh.c
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@ -95,6 +95,9 @@ static int lmh_probe(struct platform_device *pdev)
unsigned int enable_alg;
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;