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Mon, 23 Mar 2026 07:35:21 +0000 Received: from smtpav04.wdc07v.mail.ibm.com (smtpav04.wdc07v.mail.ibm.com [10.39.53.231]) by smtprelay06.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 62N7ZKIj55706086 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 23 Mar 2026 07:35:20 GMT Received: from smtpav04.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9186E58052; Mon, 23 Mar 2026 07:35:20 +0000 (GMT) Received: from smtpav04.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D169058054; Mon, 23 Mar 2026 07:35:13 +0000 (GMT) Received: from [9.61.247.60] (unknown [9.61.247.60]) by smtpav04.wdc07v.mail.ibm.com (Postfix) with ESMTP; Mon, 23 Mar 2026 07:35:13 +0000 (GMT) Message-ID: Date: Mon, 23 Mar 2026 13:05:12 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning Content-Language: en-GB To: arnd@arndb.de, gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, nathan@kernel.org, nsc@kernel.org, ojeda@kernel.org, masahiroy@kernel.org, linux@weissschuh.net, tamird@kernel.org, rostedt@goodmis.org, ihor.solodrai@linux.dev, ritesh.list@gmail.com, maddy@linux.ibm.com, peterz@infradead.org References: <20260323072422.25730-1-venkat88@linux.ibm.com> From: Venkat Rao Bagalkote In-Reply-To: <20260323072422.25730-1-venkat88@linux.ibm.com> Content-Type: text/plain; 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Sent v2 [1] [1]: https://lore.kernel.org/all/20260323073220.25798-1-venkat88@linux.ibm.com/ Regards, Venkat. On 23/03/26 12:54 pm, Venkat Rao Bagalkote wrote: > 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. > > Signed-off-by: Venkat Rao Bagalkote > --- > drivers/char/nvram.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c > index 9eff426a9286..2ce3307663ed 100644 > --- a/drivers/char/nvram.c > +++ b/drivers/char/nvram.c > @@ -53,7 +53,7 @@ > #include > #endif > > -static DEFINE_MUTEX(nvram_mutex); > +static __maybe_unused 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 */