5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manikanta Mylavarapu <quic_mmanikan@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20241016144852.2888679-1-quic_mmanikan@xxxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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) {
