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

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Date: Wed,  3 Apr 2024 16:34:27 +0200
From: Gergo Koteles <soyer@....hu>
To: Matan Ziv-Av <matan@...alib.org>,
  Hans de Goede <hdegoede@...hat.com>,
  Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: platform-driver-x86@...r.kernel.org,
  linux-kernel@...r.kernel.org, Gergo Koteles <soyer@....hu>
Subject: [PATCH] platform/x86: lg-laptop: fix %s null argument warning

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@....hu>
---
 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)
 		default:
 			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
-- 
2.44.0