linux-kernel - [PATCH 12/12] PCI: Simplify pcie_capability_clear_and_set

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Message-Id: <20230824193712.542167-13-helgaas@kernel.org>
Date:   Thu, 24 Aug 2023 14:37:12 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     linux-pci@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 12/12] PCI: Simplify pcie_capability_clear_and_set_word() control flow

From: Bjorn Helgaas <bhelgaas@...gle.com>

Return early for errors in pcie_capability_clear_and_set_word_unlocked()
and pcie_capability_clear_and_set_dword() to simplify the control flow.

No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/pci/access.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 0b2e90d2f04f..6554a2e89d36 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -504,13 +504,12 @@ int pcie_capability_clear_and_set_word_unlocked(struct pci_dev *dev, int pos,
 	u16 val;
 
 	ret = pcie_capability_read_word(dev, pos, &val);
-	if (!ret) {
-		val &= ~clear;
-		val |= set;
-		ret = pcie_capability_write_word(dev, pos, val);
-	}
+	if (ret)
+		return ret;
 
-	return ret;
+	val &= ~clear;
+	val |= set;
+	return pcie_capability_write_word(dev, pos, val);
 }
 EXPORT_SYMBOL(pcie_capability_clear_and_set_word_unlocked);
 
@@ -535,13 +534,12 @@ int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
 	u32 val;
 
 	ret = pcie_capability_read_dword(dev, pos, &val);
-	if (!ret) {
-		val &= ~clear;
-		val |= set;
-		ret = pcie_capability_write_dword(dev, pos, val);
-	}
+	if (ret)
+		return ret;
 
-	return ret;
+	val &= ~clear;
+	val |= set;
+	return pcie_capability_write_dword(dev, pos, val);
 }
 EXPORT_SYMBOL(pcie_capability_clear_and_set_dword);
 
-- 
2.34.1