linux-kernel - [PATCH] Input: synaptics-rmi4 - remove the useless unsigned variable compared with zero

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Message-Id: <1606113428-21462-1-git-send-email-kaixuxia@tencent.com>
Date:   Mon, 23 Nov 2020 14:37:08 +0800
From:   xiakaixu1987@...il.com
To:     dmitry.torokhov@...il.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH] Input: synaptics-rmi4 - remove the useless unsigned variable compared with zero

From: Kaixu Xia <kaixuxia@...cent.com>

It is always true that the value of unsigned variable size_presence_reg
greater than or equal to zero, so compared with zero is unnecessary.
Remove it.

Reported-by: Tosk Robot <tencent_os_robot@...cent.com>
Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 drivers/input/rmi4/rmi_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 258d5fe3d395..e7c9300417e3 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -580,7 +580,7 @@ int rmi_read_register_desc(struct rmi_device *d, u16 addr,
 		return ret;
 	++addr;
 
-	if (size_presence_reg < 0 || size_presence_reg > 35)
+	if (size_presence_reg > 35)
 		return -EIO;
 
 	memset(buf, 0, sizeof(buf));
-- 
2.20.0