linux-kernel - [PATCH -next] platform/chrome: cros_ec_lpc: Use DEFINE

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Message-ID: <20210409095138.2293869-1-yebin10@huawei.com>
Date:   Fri, 9 Apr 2021 17:51:38 +0800
From:   Ye Bin <yebin10@...wei.com>
To:     <yebin10@...wei.com>, Benson Leung <bleung@...omium.org>,
        "Enric Balletbo i Serra" <enric.balletbo@...labora.com>
CC:     <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>,
        "Hulk Robot" <hulkci@...wei.com>
Subject: [PATCH -next] platform/chrome: cros_ec_lpc: Use DEFINE_MUTEX() for mutex lock

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Ye Bin <yebin10@...wei.com>
---
 drivers/platform/chrome/cros_ec_lpc_mec.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_lpc_mec.c b/drivers/platform/chrome/cros_ec_lpc_mec.c
index 9035b17e8c86..bbc2884f5e2f 100644
--- a/drivers/platform/chrome/cros_ec_lpc_mec.c
+++ b/drivers/platform/chrome/cros_ec_lpc_mec.c
@@ -14,7 +14,7 @@
  * This mutex must be held while accessing the EMI unit. We can't rely on the
  * EC mutex because memmap data may be accessed without it being held.
  */
-static struct mutex io_mutex;
+static DEFINE_MUTEX(io_mutex);
 static u16 mec_emi_base, mec_emi_end;
 
 /**
@@ -142,7 +142,6 @@ EXPORT_SYMBOL(cros_ec_lpc_io_bytes_mec);
 
 void cros_ec_lpc_mec_init(unsigned int base, unsigned int end)
 {
-	mutex_init(&io_mutex);
 	mec_emi_base = base;
 	mec_emi_end = end;
 }