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

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BugLink: https://bugs.launchpad.net/bugs/2101915

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>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Manikanta Mylavarapu
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent d4b91add57
commit e9de5d5cc9
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/soc/qcom/socinfo.c
+1 -1
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@@ -779,7 +779,7 @@ 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) {