From: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
maddy@linux.ibm.com, ritesh.list@gmail.com, arnd@arndb.de,
chleroy@kernel.org, Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Subject: [PATCH v3] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning
Date: Mon, 30 Mar 2026 11:52:01 +0530 [thread overview]
Message-ID: <20260330062201.2581-1-venkat88@linux.ibm.com> (raw)
drivers/char/nvram.c defines a static mutex 'nvram_mutex' which is never
used. This results in a compiler warning on linux-next builds:
warning: 'nvram_mutex' defined but not used [-Wunused-variable]
Remove the unused definition to avoid the warning.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
---
v3:
- Removed global nvram_mutex entirely
drivers/char/nvram.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 9eff426a9286..9ab2744cd375 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -53,7 +53,6 @@
#include <asm/nvram.h>
#endif
-static DEFINE_MUTEX(nvram_mutex);
static DEFINE_SPINLOCK(nvram_state_lock);
static int nvram_open_cnt; /* #times opened */
static int nvram_open_mode; /* special open modes */
--
2.45.2
next reply other threads:[~2026-03-30 6:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 6:22 Venkat Rao Bagalkote [this message]
2026-03-30 6:42 ` [PATCH v3] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning Ritesh Harjani
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