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| author | Kunwu Chan <chentao@kylinos.cn> | 2024-09-02 08:39:20 +0200 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-11-12 17:41:45 +0100 |
| commit | ad8d1e323dd37f91d0c973e2a74c7b9054219adc (patch) | |
| tree | 5f25f580f689794ebf0189a61c075a2407c206d4 | |
| parent | Linux 6.12-rc1 (diff) | |
| download | linux-ad8d1e323dd37f91d0c973e2a74c7b9054219adc.tar.xz linux-ad8d1e323dd37f91d0c973e2a74c7b9054219adc.zip | |
ARM: 9415/1: amba: Add dev_is_amba() function and export it for modules
Add dev_is_amba() function to determine
whether the device is a AMBA device.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | drivers/amba/bus.c | 6 | ||||
| -rw-r--r-- | include/linux/amba/bus.h | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 0230c43377c1..8ef259b4d037 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -449,6 +449,12 @@ const struct bus_type amba_bustype = { }; EXPORT_SYMBOL_GPL(amba_bustype); +bool dev_is_amba(const struct device *dev) +{ + return dev->bus == &amba_bustype; +} +EXPORT_SYMBOL_GPL(dev_is_amba); + static int __init amba_init(void) { return bus_register(&amba_bustype); diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index dda2f3ea89cb..9946276aff73 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -121,6 +121,7 @@ extern const struct bus_type amba_bustype; #ifdef CONFIG_ARM_AMBA int __amba_driver_register(struct amba_driver *, struct module *); void amba_driver_unregister(struct amba_driver *); +bool dev_is_amba(const struct device *dev); #else static inline int __amba_driver_register(struct amba_driver *drv, struct module *owner) @@ -130,6 +131,10 @@ static inline int __amba_driver_register(struct amba_driver *drv, static inline void amba_driver_unregister(struct amba_driver *drv) { } +static inline bool dev_is_amba(const struct device *dev) +{ + return false; +} #endif struct amba_device *amba_device_alloc(const char *, resource_size_t, size_t); |