linux-kernel - [RFC PATCH 17/35] hwmon: (sis5595) Tidy Success/Failure checks

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Date:   Mon, 13 Jul 2020 14:22:29 +0200
From:   "Saheed O. Bolarinwa" <refactormyself@...il.com>
To:     helgaas@...nel.org, Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     "Saheed O. Bolarinwa" <refactormyself@...il.com>,
        bjorn@...gaas.com, skhan@...uxfoundation.org,
        linux-pci@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org
Subject: [RFC PATCH 17/35] hwmon: (sis5595) Tidy Success/Failure checks

Remove unnecessary check for 0.

Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@...il.com>
---
This patch depends on PATCH 16/35

 drivers/hwmon/sis5595.c | 13 ++++---------
 drivers/hwmon/via686a.c | 13 ++++---------
 drivers/hwmon/vt8231.c  | 13 ++++---------
 3 files changed, 12 insertions(+), 27 deletions(-)

diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 0ea174fb3048..91fdddaa4136 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -825,8 +825,7 @@ static int sis5595_pci_probe(struct pci_dev *dev,
 		pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
 	}
 
-	if (0 !=
-	    pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
+	if (pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
 		dev_err(&dev->dev, "Failed to read ISA address\n");
 		return -ENODEV;
 	}
@@ -843,17 +842,13 @@ static int sis5595_pci_probe(struct pci_dev *dev,
 		return -ENODEV;
 	}
 
-	if (0 !=
-	    pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
+	if (pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
 		dev_err(&dev->dev, "Failed to read enable register\n");
 		return -ENODEV;
 	}
 	if (!(enable & 0x80)) {
-		if ((0 !=
-		     pci_write_config_byte(dev, SIS5595_ENABLE_REG,
-					   enable | 0x80))
-		 || (0 !=
-		     pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
+		if ((pci_write_config_byte(dev, SIS5595_ENABLE_REG, enable | 0x80))
+		 || (pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
 		 || (!(enable & 0x80))) {
 			/* doesn't work for some chips! */
 			dev_err(&dev->dev, "Failed to enable HWM device\n");
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c
index cffea688878f..b8466e2e1435 100644
--- a/drivers/hwmon/via686a.c
+++ b/drivers/hwmon/via686a.c
@@ -863,12 +863,10 @@ static int via686a_pci_probe(struct pci_dev *dev,
 	if (force_addr) {
 		address = force_addr & ~(VIA686A_EXTENT - 1);
 		dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", address);
-		if (0 !=
-		    pci_write_config_word(dev, VIA686A_BASE_REG, address | 1))
+		if (pci_write_config_word(dev, VIA686A_BASE_REG, address | 1))
 			return -ENODEV;
 	}
-	if (0 !=
-	    pci_read_config_word(dev, VIA686A_BASE_REG, &val))
+	if (pci_read_config_word(dev, VIA686A_BASE_REG, &val))
 		return -ENODEV;
 
 	address = val & ~(VIA686A_EXTENT - 1);
@@ -878,8 +876,7 @@ static int via686a_pci_probe(struct pci_dev *dev,
 		return -ENODEV;
 	}
 
-	if (0 !=
-	    pci_read_config_word(dev, VIA686A_ENABLE_REG, &val))
+	if (pci_read_config_word(dev, VIA686A_ENABLE_REG, &val))
 		return -ENODEV;
 	if (!(val & 0x0001)) {
 		if (!force_addr) {
@@ -890,9 +887,7 @@ static int via686a_pci_probe(struct pci_dev *dev,
 		}
 
 		dev_warn(&dev->dev, "Enabling sensors\n");
-		if (0 !=
-		    pci_write_config_word(dev, VIA686A_ENABLE_REG,
-					  val | 0x0001))
+		if (pci_write_config_word(dev, VIA686A_ENABLE_REG, val | 0x0001))
 			return -ENODEV;
 	}
 
diff --git a/drivers/hwmon/vt8231.c b/drivers/hwmon/vt8231.c
index cc1d24c2a2c8..ee6cd6b85f91 100644
--- a/drivers/hwmon/vt8231.c
+++ b/drivers/hwmon/vt8231.c
@@ -987,13 +987,11 @@ static int vt8231_pci_probe(struct pci_dev *dev,
 		dev_warn(&dev->dev, "Forcing ISA address 0x%x\n",
 			 address);
 
-		if (0 !=
-		    pci_write_config_word(dev, VT8231_BASE_REG, address | 1))
+		if (pci_write_config_word(dev, VT8231_BASE_REG, address | 1))
 			return -ENODEV;
 	}
 
-	if (0 != pci_read_config_word(dev, VT8231_BASE_REG,
-							&val))
+	if (pci_read_config_word(dev, VT8231_BASE_REG, &val))
 		return -ENODEV;
 
 	address = val & ~(VT8231_EXTENT - 1);
@@ -1002,15 +1000,12 @@ static int vt8231_pci_probe(struct pci_dev *dev,
 		return -ENODEV;
 	}
 
-	if (0 != pci_read_config_word(dev, VT8231_ENABLE_REG,
-							&val))
+	if (pci_read_config_word(dev, VT8231_ENABLE_REG, &val))
 		return -ENODEV;
 
 	if (!(val & 0x0001)) {
 		dev_warn(&dev->dev, "enabling sensors\n");
-		if (0 !=
-			pci_write_config_word(dev, VT8231_ENABLE_REG,
-							val | 0x0001))
+		if (pci_write_config_word(dev, VT8231_ENABLE_REG, val | 0x0001))
 			return -ENODEV;
 	}
 
-- 
2.18.2