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PCI/MSI: Use bool for MSI enable state tracking

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Convert pci_msi_enable and pci_msi_enabled() to use bool type for clarity.
No functional changes, only code cleanup.

Signed-off-by: Hans Zhang <hans.zhang@cixtech.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250516165223.125083-2-18255117159@163.com
This commit is contained in:
Hans Zhang
2025-05-17 00:52:22 +08:00
committed by Thomas Gleixner
parent 9442427876
commit 4e7bca76e3
4 changed files with 6 additions and 6 deletions
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2
drivers/pci/msi/api.c
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@@ -399,7 +399,7 @@ EXPORT_SYMBOL_GPL(pci_restore_msi_state);
* Return: true if MSI has not been globally disabled through ACPI FADT,
* PCI bridge quirks, or the "pci=nomsi" kernel command-line option.
*/
int pci_msi_enabled(void)
bool pci_msi_enabled(void)
{
return pci_msi_enable;
}

4
drivers/pci/msi/msi.c
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@@ -15,7 +15,7 @@
#include "../pci.h"
#include "msi.h"
int pci_msi_enable = 1;
bool pci_msi_enable = true;
/**
* pci_msi_supported - check whether MSI may be enabled on a device
@@ -970,5 +970,5 @@ EXPORT_SYMBOL(msi_desc_to_pci_dev);
void pci_no_msi(void)
{
pci_msi_enable = 0;
pci_msi_enable = false;
}

2
drivers/pci/msi/msi.h
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@@ -87,7 +87,7 @@ static inline __attribute_const__ u32 msi_multi_mask(struct msi_desc *desc)
void msix_prepare_msi_desc(struct pci_dev *dev, struct msi_desc *desc);
/* Subsystem variables */
extern int pci_msi_enable;
extern bool pci_msi_enable;
/* MSI internal functions invoked from the public APIs */
void pci_msi_shutdown(struct pci_dev *dev);

4
include/linux/pci.h
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@@ -1669,7 +1669,7 @@ void pci_disable_msi(struct pci_dev *dev);
int pci_msix_vec_count(struct pci_dev *dev);
void pci_disable_msix(struct pci_dev *dev);
void pci_restore_msi_state(struct pci_dev *dev);
int pci_msi_enabled(void);
bool pci_msi_enabled(void);
int pci_enable_msi(struct pci_dev *dev);
int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
int minvec, int maxvec);
@@ -1702,7 +1702,7 @@ static inline void pci_disable_msi(struct pci_dev *dev) { }
static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; }
static inline void pci_disable_msix(struct pci_dev *dev) { }
static inline void pci_restore_msi_state(struct pci_dev *dev) { }
static inline int pci_msi_enabled(void) { return 0; }
static inline bool pci_msi_enabled(void) { return false; }
static inline int pci_enable_msi(struct pci_dev *dev)
{ return -ENOSYS; }
static inline int pci_enable_msix_range(struct pci_dev *dev,