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

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commit d9d3490c48 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: 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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Konrad Dybcio
2024-03-09 14:15:03 +01:00
committed by Greg Kroah-Hartman
parent a106d0837d
commit aa1a0807b4
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;