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From: "Saheed O. Bolarinwa" <refactormyself@gmail.com>
To: helgaas@kernel.org
Cc: "Saheed O. Bolarinwa" <refactormyself@gmail.com>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-kernel-mentees@lists.linuxfoundation.org
Subject: [Linux-kernel-mentees] [RFC PATCH 08/35] PCI: Tidy Success/Failure checks
Date: Mon, 13 Jul 2020 14:22:20 +0200	[thread overview]
Message-ID: <20200713122247.10985-9-refactormyself@gmail.com> (raw)
In-Reply-To: <20200713122247.10985-1-refactormyself@gmail.com>

Remove unnecessary check for 0.

Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@gmail.com>
---
This patch depends on PATCH 07/35

 drivers/pci/pci-bridge-emul.c      | 2 +-
 drivers/pci/pci.c                  | 8 ++++----
 drivers/pci/pcie/bw_notification.c | 4 ++--
 drivers/pci/probe.c                | 4 ++--
 drivers/pci/quirks.c               | 4 ++--
 drivers/pci/syscall.c              | 8 ++++----
 6 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index 9695c453e197..c270c18d5cf5 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -400,7 +400,7 @@ int pci_bridge_emul_conf_write(struct pci_bridge_emul *bridge, int where,
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
 	ret = pci_bridge_emul_conf_read(bridge, reg, 4, &old);
-	if (ret != 0)
+	if (ret)
 		return ret;
 
 	if (bridge->has_pcie && reg >= PCI_CAP_PCIE_START) {
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index a74547861d5e..4b2a348576cb 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -185,7 +185,7 @@ int pci_status_get_and_clear_errors(struct pci_dev *pdev)
 	int ret;
 
 	ret = pci_read_config_word(pdev, PCI_STATUS, &status);
-	if (ret != 0)
+	if (ret)
 		return -EIO;
 
 	status &= PCI_STATUS_ERROR_BITS;
@@ -534,7 +534,7 @@ int pci_find_next_ext_capability(struct pci_dev *dev, int start, int cap)
 	if (start)
 		pos = start;
 
-	if (pci_read_config_dword(dev, pos, &header) != 0)
+	if (pci_read_config_dword(dev, pos, &header))
 		return 0;
 
 	/*
@@ -552,7 +552,7 @@ int pci_find_next_ext_capability(struct pci_dev *dev, int start, int cap)
 		if (pos < PCI_CFG_SPACE_SIZE)
 			break;
 
-		if (pci_read_config_dword(dev, pos, &header) != 0)
+		if (pci_read_config_dword(dev, pos, &header))
 			break;
 	}
 
@@ -628,7 +628,7 @@ static int __pci_find_next_ht_cap(struct pci_dev *dev, int pos, int ht_cap)
 				      PCI_CAP_ID_HT, &ttl);
 	while (pos) {
 		rc = pci_read_config_byte(dev, pos + 3, &cap);
-		if (rc != 0)
+		if (rc)
 			return 0;
 
 		if ((cap & mask) == ht_cap)
diff --git a/drivers/pci/pcie/bw_notification.c b/drivers/pci/pcie/bw_notification.c
index c7201d886026..f62c19ffedfc 100644
--- a/drivers/pci/pcie/bw_notification.c
+++ b/drivers/pci/pcie/bw_notification.c
@@ -23,7 +23,7 @@ static bool pcie_link_bandwidth_notification_supported(struct pci_dev *dev)
 	u32 lnk_cap;
 
 	ret = pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnk_cap);
-	return (ret == 0) && (lnk_cap & PCI_EXP_LNKCAP_LBNC);
+	return (!ret) && (lnk_cap & PCI_EXP_LNKCAP_LBNC);
 }
 
 static void pcie_enable_link_bandwidth_notification(struct pci_dev *dev)
@@ -56,7 +56,7 @@ static irqreturn_t pcie_bw_notification_irq(int irq, void *context)
 	ret = pcie_capability_read_word(port, PCI_EXP_LNKSTA, &link_status);
 	events = link_status & PCI_EXP_LNKSTA_LBMS;
 
-	if (ret != 0 || !events)
+	if (ret || !events)
 		return IRQ_NONE;
 
 	pcie_capability_write_word(port, PCI_EXP_LNKSTA, events);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index ab7e19882b30..60ecebbc7dcf 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1582,7 +1582,7 @@ static bool pci_ext_cfg_is_aliased(struct pci_dev *dev)
 
 	for (pos = PCI_CFG_SPACE_SIZE;
 	     pos < PCI_CFG_SPACE_EXP_SIZE; pos += PCI_CFG_SPACE_SIZE) {
-		if (pci_read_config_dword(dev, pos, &tmp) != 0
+		if (pci_read_config_dword(dev, pos, &tmp)
 		    || header != tmp)
 			return false;
 	}
@@ -1609,7 +1609,7 @@ static int pci_cfg_space_size_ext(struct pci_dev *dev)
 	u32 status;
 	int pos = PCI_CFG_SPACE_SIZE;
 
-	if (pci_read_config_dword(dev, pos, &status) != 0)
+	if (pci_read_config_dword(dev, pos, &status))
 		return PCI_CFG_SPACE_SIZE;
 	if (status == 0xffffffff || pci_ext_cfg_is_aliased(dev))
 		return PCI_CFG_SPACE_SIZE;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index e60ef8abd698..8b69d6ebb619 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5116,8 +5116,8 @@ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
 		pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
 
 		pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
-		if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
-		    0 || (status == 0xffffffff))
+		if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status)
+		     || (status == 0xffffffff))
 			pdev->cfg_size = PCI_CFG_SPACE_SIZE;
 
 		if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c
index 7d45b58beacd..a208700000ea 100644
--- a/drivers/pci/syscall.c
+++ b/drivers/pci/syscall.c
@@ -46,7 +46,7 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn,
 	}
 
 	err = -EIO;
-	if (cfg_ret != 0)
+	if (cfg_ret)
 		goto error;
 
 	switch (len) {
@@ -105,7 +105,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
 		if (err)
 			break;
 		err = pci_user_write_config_byte(dev, off, byte);
-		if (err != 0)
+		if (err)
 			err = -EIO;
 		break;
 
@@ -114,7 +114,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
 		if (err)
 			break;
 		err = pci_user_write_config_word(dev, off, word);
-		if (err != 0)
+		if (err)
 			err = -EIO;
 		break;
 
@@ -123,7 +123,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
 		if (err)
 			break;
 		err = pci_user_write_config_dword(dev, off, dword);
-		if (err != 0)
+		if (err)
 			err = -EIO;
 		break;
 
-- 
2.18.2

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  parent reply	other threads:[~2020-07-13 13:22 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-13 12:22 [Linux-kernel-mentees] [RFC PATCH 00/35] Move all PCIBIOS* definitions into arch/x86 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 01/35] xen-pciback: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 02/35] ssb: " Saheed O. Bolarinwa
2020-07-13 17:16   ` Larry Finger
2020-07-13 19:13     ` Saheed Bolarinwa
2020-07-13 18:29       ` Arnd Bergmann
2020-07-13 18:35       ` Larry Finger
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 03/35] scsi: ipr: " Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 04/35] scsi: ipr: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 05/35] PCI: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 06/35] PCI: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 13:59   ` Gustavo Pimentel
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 07/35] PCI: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` Saheed O. Bolarinwa [this message]
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 09/35] nvme-pci: " Saheed O. Bolarinwa
2020-07-13 16:42   ` Rajashekar, Revanth
2020-07-13 18:24     ` Saheed Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 10/35] nvme-pci: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 11/35] r8169: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 12/35] r8169: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 13:45   ` Heiner Kallweit
2020-07-13 13:09     ` Saheed Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 13/35] cxl: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 14/35] i2c/busses: " Saheed O. Bolarinwa
2020-07-17 14:58   ` Jean Delvare
2020-07-18 19:05     ` Saheed Bolarinwa
2020-07-22 11:06       ` Wolfram Sang
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 15/35] i2c/busses: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-17 15:11   ` Jean Delvare
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 16/35] hwmon: (sis5595) Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-14  5:02   ` Guenter Roeck
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 17/35] hwmon: (sis5595) Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-14  5:04   ` Guenter Roeck
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 18/35] bcma: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 19/35] atm: " Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 20/35] atm: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 21/35] atm: Fix Style ERROR- assignment in if condition Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 22/35] unicore32: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 23/35] sparc/PCI: " Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 24/35] sh: " Saheed O. Bolarinwa
2020-07-20 21:41   ` Rich Felker
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 25/35] sh: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 26/35] powerpc: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 27/35] powerpc: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 28/35] mips: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 29/35] mips: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 30/35] microblaze: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 31/35] m68k: " Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 32/35] arm/PCI: " Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 33/35] arm/PCI: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 34/35] PCI: Change PCIBIOS_SUCCESSFUL to 0 Saheed O. Bolarinwa
2020-07-13 12:22 ` [Linux-kernel-mentees] [RFC PATCH 35/35] alpha: Tidy Success/Failure checks Saheed O. Bolarinwa
2020-07-13 15:08 ` [Linux-kernel-mentees] [RFC PATCH 00/35] Move all PCIBIOS* definitions into arch/x86 Arnd Bergmann
2020-07-14 18:45   ` Bjorn Helgaas
2020-07-14 21:02     ` Kjetil Oftedal
2020-07-15  2:14       ` Benjamin Herrenschmidt
2020-07-14 22:01     ` Arnd Bergmann
2020-07-14 23:46       ` Bjorn Helgaas
2020-07-15  2:19         ` Benjamin Herrenschmidt
2020-07-15  6:47         ` Arnd Bergmann
2020-07-15 14:24           ` David Laight
2020-07-15 22:01             ` Bjorn Helgaas
2020-07-16  8:18               ` David Laight
2020-07-15 22:26           ` Benjamin Herrenschmidt
2020-07-15  4:18       ` Oliver O'Halloran
2020-07-15 14:38         ` David Laight
2020-07-15 22:12           ` Bjorn Helgaas
2020-07-15 22:49             ` Benjamin Herrenschmidt
2020-07-16  8:07               ` David Laight
2020-07-14 23:14     ` Rob Herring
2020-07-15  2:12     ` Benjamin Herrenschmidt
2020-07-13 22:01 ` Bjorn Helgaas

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