5.15-stable review patch. If anyone has any objections, please let me know.
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From: Konrad Dybcio konrad.dybcio@linaro.org
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@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.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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;