linux-kernel - [PATCH] staging: nvec: use strcmp() instead of strncmp() with magic length

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Message-ID: <20260205234632.1964-1-iprintercanon@gmail.com>
Date: Thu,  5 Feb 2026 23:46:32 +0000
From: Artem Lytkin <iprintercanon@...il.com>
To: Marc Dietrich <marvin24@....de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: ac100@...ts.launchpad.net,
	linux-tegra@...r.kernel.org,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Artem Lytkin <iprintercanon@...il.com>
Subject: [PATCH] staging: nvec: use strcmp() instead of strncmp() with magic length

Replace strncmp() with a hardcoded length of 30 with strcmp().
The bat_type string is already null-terminated (set two lines above),
so strncmp() with an arbitrary length is misleading and functionally
equivalent to strcmp().

Signed-off-by: Artem Lytkin <iprintercanon@...il.com>
---
 drivers/staging/nvec/nvec_power.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/nvec/nvec_power.c b/drivers/staging/nvec/nvec_power.c
index 2faab9fde..89dd997aa 100644
--- a/drivers/staging/nvec/nvec_power.c
+++ b/drivers/staging/nvec/nvec_power.c
@@ -207,7 +207,7 @@ static int nvec_power_bat_notifier(struct notifier_block *nb,
 		 * This differs a little from the spec fill in more if you find
 		 * some.
 		 */
-		if (!strncmp(power->bat_type, "Li", 30))
+		if (!strcmp(power->bat_type, "Li"))
 			power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
 		else
 			power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
-- 
2.43.0