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soc: qcom: socinfo: fix revision check in qcom_socinfo_probe()

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commit 128fdbf36c 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: e694d2b5c5 ("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>
This commit is contained in:
Manikanta Mylavarapu
2024-10-16 20:18:52 +05:30
committed by Greg Kroah-Hartman
parent 9b26540820
commit ca0d15ee5a
1 changed files with 1 additions and 1 deletions
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drivers/soc/qcom/socinfo.c
+1 -1
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@@ -614,7 +614,7 @@ static int qcom_socinfo_probe(struct platform_device *pdev)
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) {