[PATCH v3 2/3] platform/x86: topstar-laptop: Check ACPI_COMPANION() against NULL

[Jiale Yao]

Add a requisite ACPI_COMPANION() check against NULL to the
topstar-laptop driver, 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/topstar-laptop.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
index e09d7f8ce45f..f6fafa345f93 100644
--- a/drivers/platform/x86/topstar-laptop.c
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -291,6 +291,9 @@ static int topstar_acpi_probe(struct platform_device *pdev)
 	struct topstar_laptop *topstar;
 	int err;
 
+	if (!device)
+		return -ENODEV;
+
 	dmi_check_system(topstar_dmi_ids);
 
 	topstar = kzalloc_obj(struct topstar_laptop);
-- 
2.34.1