[PATCH v3 3/3] platform/x86: hsmp: Check ACPI_COMPANION() against NULL

[Jiale Yao]

Add a requisite ACPI_COMPANION() check against NULL to the
AMD HSMP acpi probe, aligning with the fix applied to
asus-wireless driver.

Assisted-by: claude:deepseek-v4-pro
Signed-off-by: Jiale Yao <yaojiale02@xxxxxxx>
---
 drivers/platform/x86/amd/hsmp/acpi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/platform/x86/amd/hsmp/acpi.c b/drivers/platform/x86/amd/hsmp/acpi.c
index 97ed71593bdf..615b3ebe66e7 100644
--- a/drivers/platform/x86/amd/hsmp/acpi.c
+++ b/drivers/platform/x86/amd/hsmp/acpi.c
@@ -71,6 +71,8 @@ static inline int hsmp_get_uid(struct device *dev, u16 *sock_ind)
 {
 	char *uid;
 
+	if (!ACPI_COMPANION(dev))
+		return -ENODEV;
 	/*
 	 * UID (ID00, ID01..IDXX) is used for differentiating sockets,
 	 * read it and strip the "ID" part of it and convert the remaining
-- 
2.34.1