The nvbios_iccsense_parse function allocates memory for sensor data
but fails to free it when the function exits, leading to a memory
leak. Add proper cleanup to free the allocated memory.
Fixes: b71c0892631a ("drm/nouveau/iccsense: implement for ina209, ina219 and ina3221")
Cc: stable@xxxxxxxxxxxxxxx
Co-developed-by: Duanjun Li <duanjun@xxxxxxxxxxxx>
Signed-off-by: Zhanxin Qi <zhanxin@xxxxxxxxxxxx>
---
.../include/nvkm/subdev/bios/iccsense.h | 2 ++
.../drm/nouveau/nvkm/subdev/bios/iccsense.c | 20 +++++++++++++++++++
.../drm/nouveau/nvkm/subdev/iccsense/base.c | 3 +++
3 files changed, 25 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/iccsense.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/iccsense.h
index 4c108fd2c805..8bfc28c3f7a7 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/iccsense.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/iccsense.h
@@ -20,4 +20,6 @@ struct nvbios_iccsense {
};
int nvbios_iccsense_parse(struct nvkm_bios *, struct nvbios_iccsense *);
+
+void nvbios_iccsense_cleanup(struct nvbios_iccsense *iccsense);
#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
index dea444d48f94..ca7c27b92f16 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
@@ -56,6 +56,19 @@ nvbios_iccsense_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt,
return 0;
}
+/**
+ * nvbios_iccsense_parse - Parse ICCSENSE table from VBIOS
+ * @bios: VBIOS base pointer
+ * @iccsense: ICCSENSE table structure to fill
+ *
+ * Parses the ICCSENSE table from VBIOS and fills the provided structure.
+ * The caller must invoke nvbios_iccsense_cleanup() after successful parsing
+ * to free the allocated rail resources.
+ *
+ * Returns:
+ * 0 - Success
+ * -EINVAL - Table not found
+ */
int
nvbios_iccsense_parse(struct nvkm_bios *bios, struct nvbios_iccsense *iccsense)
{
@@ -127,3 +140,10 @@ nvbios_iccsense_parse(struct nvkm_bios *bios, struct nvbios_iccsense *iccsense)
return 0;
}
+
+void
+nvbios_iccsense_cleanup(struct nvbios_iccsense *iccsense)
+{
+ kfree(iccsense->rail);
+ iccsense->rail = NULL;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
index 8f0ccd3664eb..4c1759ecce38 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
@@ -291,6 +291,9 @@ nvkm_iccsense_oneinit(struct nvkm_subdev *subdev)
list_add_tail(&rail->head, &iccsense->rails);
}
}
+
+ nvbios_iccsense_cleanup(&stbl);
+
return 0;
}
--
2.30.2
