5.4-stable review patch. If anyone has any objections, please let me know.
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From: Manikanta Mylavarapu quic_mmanikan@quicinc.com
commit 128fdbf36cddc2a901c4889ba1c89fa9f2643f2c upstream.
In success case, the revision holds a non-null pointer. The current logic incorrectly returns an error for a non-null pointer, whereas it should return an error for a null pointer.
The socinfo driver for IPQ9574 and IPQ5332 is currently broken, resulting in the following error message qcom-socinfo qcom-socinfo: probe with driver qcom-socinfo failed with error -12
Add a null check for the revision to ensure it returns an error only in failure case (null pointer).
Fixes: e694d2b5c58b ("soc: qcom: Add check devm_kasprintf() returned value") Signed-off-by: Manikanta Mylavarapu quic_mmanikan@quicinc.com Reviewed-by: Konrad Dybcio konrad.dybcio@oss.qualcomm.com Link: https://lore.kernel.org/r/20241016144852.2888679-1-quic_mmanikan@quicinc.com Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/soc/qcom/socinfo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/soc/qcom/socinfo.c +++ b/drivers/soc/qcom/socinfo.c @@ -433,7 +433,7 @@ static int qcom_socinfo_probe(struct pla qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u", SOCINFO_MAJOR(le32_to_cpu(info->ver)), SOCINFO_MINOR(le32_to_cpu(info->ver))); - if (!qs->attr.soc_id || qs->attr.revision) + if (!qs->attr.soc_id || !qs->attr.revision) return -ENOMEM;
if (offsetof(struct socinfo, serial_num) <= item_size) {