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[1.164.69.22]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4854b65fed7sm128019995e9.11.2026.03.12.07.44.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Mar 2026 07:44:34 -0700 (PDT) Date: Thu, 12 Mar 2026 22:44:25 +0800 From: Richard Lyu To: Richard Weinberger Cc: Vignesh Raghavendra , Richard Lyu , Aryan Srivastava , Thomas Gleixner , Markus Stockhausen , Kees Cook , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] mtd: nand: Use guard for mutex in nand_suspend Message-ID: <20260312144408.489659-1-richard.lyu@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email 2.51.0 User-Agent: Mutt/2.2.13 (2024-03-09) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Refactor nand_suspend() to use the guard(mutex) macro instead of explicit mutex_lock() and mutex_unlock() calls. This simplifies the code and improves safety by ensuring the mutex is always released via the RAII-based cleanup infrastructure when the function returns. No functional changes intended. Signed-off-by: Richard Lyu --- drivers/mtd/nand/raw/nand_base.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_b= ase.c index 9e3561f34ea8..93ba5dec1669 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4687,12 +4687,11 @@ static int nand_suspend(struct mtd_info *mtd) struct nand_chip *chip =3D mtd_to_nand(mtd); int ret =3D 0; =20 - mutex_lock(&chip->lock); + guard(mutex)(&chip->lock); if (chip->ops.suspend) ret =3D chip->ops.suspend(chip); if (!ret) chip->suspended =3D 1; - mutex_unlock(&chip->lock); =20 return ret; } --=20 2.51.0