linux-kernel - [PATCH 2/2] PCI: Cleanup accessor macros formatting

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Date: Mon, 29 Apr 2024 12:47:07 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 2/2] PCI: Cleanup accessor macros formatting

Cleanup formatting of PCI accessor macros:

- Put return statements on own line
- Add a few empty lines for better readability
- Align macro continuation backslashes
- Correct function call argument indentation level
- Reorder variable declarations to reverse xmas tree

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/pci/access.c | 36 +++++++++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 6449056b57dd..4962a841fa35 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -36,10 +36,13 @@ DEFINE_RAW_SPINLOCK(pci_lock);
 int noinline pci_bus_read_config_##size \
 	(struct pci_bus *bus, unsigned int devfn, int pos, type *value)	\
 {									\
-	int res;							\
 	unsigned long flags;						\
 	u32 data = 0;							\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
+	int res;							\
+									\
+	if (PCI_##size##_BAD)						\
+		return PCIBIOS_BAD_REGISTER_NUMBER;			\
+									\
 	pci_lock_config(flags);						\
 	res = bus->ops->read(bus, devfn, pos, len, &data);		\
 	if (res)							\
@@ -47,6 +50,7 @@ int noinline pci_bus_read_config_##size \
 	else								\
 		*value = (type)data;					\
 	pci_unlock_config(flags);					\
+									\
 	return res;							\
 }
 
@@ -54,12 +58,16 @@ int noinline pci_bus_read_config_##size \
 int noinline pci_bus_write_config_##size \
 	(struct pci_bus *bus, unsigned int devfn, int pos, type value)	\
 {									\
-	int res;							\
 	unsigned long flags;						\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
+	int res;							\
+									\
+	if (PCI_##size##_BAD)						\
+		return PCIBIOS_BAD_REGISTER_NUMBER;			\
+									\
 	pci_lock_config(flags);						\
 	res = bus->ops->write(bus, devfn, pos, len, value);		\
 	pci_unlock_config(flags);					\
+									\
 	return res;							\
 }
 
@@ -216,24 +224,27 @@ static noinline void pci_wait_cfg(struct pci_dev *dev)
 }
 
 /* Returns 0 on success, negative values indicate error. */
-#define PCI_USER_READ_CONFIG(size, type)					\
+#define PCI_USER_READ_CONFIG(size, type)				\
 int pci_user_read_config_##size						\
 	(struct pci_dev *dev, int pos, type *val)			\
 {									\
 	int ret = PCIBIOS_SUCCESSFUL;					\
 	u32 data = -1;							\
+									\
 	if (PCI_##size##_BAD)						\
 		return -EINVAL;						\
-	raw_spin_lock_irq(&pci_lock);				\
+									\
+	raw_spin_lock_irq(&pci_lock);					\
 	if (unlikely(dev->block_cfg_access))				\
 		pci_wait_cfg(dev);					\
 	ret = dev->bus->ops->read(dev->bus, dev->devfn,			\
-					pos, sizeof(type), &data);	\
-	raw_spin_unlock_irq(&pci_lock);				\
+				  pos, sizeof(type), &data);		\
+	raw_spin_unlock_irq(&pci_lock);					\
 	if (ret)							\
 		PCI_SET_ERROR_RESPONSE(val);				\
 	else								\
 		*val = (type)data;					\
+									\
 	return pcibios_err_to_errno(ret);				\
 }									\
 EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
@@ -244,14 +255,17 @@ int pci_user_write_config_##size					\
 	(struct pci_dev *dev, int pos, type val)			\
 {									\
 	int ret = PCIBIOS_SUCCESSFUL;					\
+									\
 	if (PCI_##size##_BAD)						\
 		return -EINVAL;						\
-	raw_spin_lock_irq(&pci_lock);				\
+									\
+	raw_spin_lock_irq(&pci_lock);					\
 	if (unlikely(dev->block_cfg_access))				\
 		pci_wait_cfg(dev);					\
 	ret = dev->bus->ops->write(dev->bus, dev->devfn,		\
-					pos, sizeof(type), val);	\
-	raw_spin_unlock_irq(&pci_lock);				\
+				   pos, sizeof(type), val);		\
+	raw_spin_unlock_irq(&pci_lock);					\
+									\
 	return pcibios_err_to_errno(ret);				\
 }									\
 EXPORT_SYMBOL_GPL(pci_user_write_config_##size);
-- 
2.39.2