[PATCH] platform/x86: lg-laptop: fix %s null argument warning

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W=1 warns about null argument to kprintf:
warning: ‘%s’ directive argument is null [-Wformat-overflow=]
pr_info("product: %s  year: %d\n", product, year);

Use "unknown" instead of NULL.

Signed-off-by: Gergo Koteles <soyer@xxxxxx>
 drivers/platform/x86/lg-laptop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/lg-laptop.c b/drivers/platform/x86/lg-laptop.c
index ad3c39e9e9f5..e714ee6298dd 100644
--- a/drivers/platform/x86/lg-laptop.c
+++ b/drivers/platform/x86/lg-laptop.c
@@ -736,7 +736,7 @@ static int acpi_add(struct acpi_device *device)
 			year = 2019;
-	pr_info("product: %s  year: %d\n", product, year);
+	pr_info("product: %s  year: %d\n", product ?: "unknown", year);
 	if (year >= 2019)
 		battery_limit_use_wmbb = 1;

base-commit: 39cd87c4eb2b893354f3b850f916353f2658ae6f

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