diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/log2.h | 11 | ||||
| -rw-r--r-- | include/linux/spi/spi.h | 10 | ||||
| -rw-r--r-- | include/linux/sysdev.h | 12 |
3 files changed, 24 insertions, 9 deletions
diff --git a/include/linux/log2.h b/include/linux/log2.h index d02e1a547a7e..99922bedfcc9 100644 --- a/include/linux/log2.h +++ b/include/linux/log2.h @@ -44,6 +44,17 @@ int __ilog2_u64(u64 n) #endif /* + * Determine whether some value is a power of two, where zero is + * *not* considered a power of two. + */ + +static inline __attribute__((const)) +bool is_power_of_2(unsigned long n) +{ + return (n != 0 && ((n & (n - 1)) == 0)); +} + +/* * round up to nearest power of two */ static inline __attribute__((const)) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 8c2edd82a073..176f6e36dbfa 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -170,7 +170,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * message's completion function when the transaction completes. */ struct spi_master { - struct device dev; + struct class_device cdev; /* other than negative (== assign one dynamically), bus_num is fully * board-specific. usually that simplifies to being SOC-specific. @@ -216,17 +216,17 @@ struct spi_master { static inline void *spi_master_get_devdata(struct spi_master *master) { - return dev_get_drvdata(&master->dev); + return class_get_devdata(&master->cdev); } static inline void spi_master_set_devdata(struct spi_master *master, void *data) { - dev_set_drvdata(&master->dev, data); + class_set_devdata(&master->cdev, data); } static inline struct spi_master *spi_master_get(struct spi_master *master) { - if (!master || !get_device(&master->dev)) + if (!master || !class_device_get(&master->cdev)) return NULL; return master; } @@ -234,7 +234,7 @@ static inline struct spi_master *spi_master_get(struct spi_master *master) static inline void spi_master_put(struct spi_master *master) { if (master) - put_device(&master->dev); + class_device_put(&master->cdev); } diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h index 166a2e58c287..389ccf858d37 100644 --- a/include/linux/sysdev.h +++ b/include/linux/sysdev.h @@ -98,12 +98,16 @@ struct sysdev_attribute { }; -#define SYSDEV_ATTR(_name,_mode,_show,_store) \ -struct sysdev_attribute attr_##_name = { \ - .attr = {.name = __stringify(_name), .mode = _mode }, \ +#define _SYSDEV_ATTR(_name,_mode,_show,_store) \ +{ \ + .attr = { .name = __stringify(_name), .mode = _mode, \ + .owner = THIS_MODULE }, \ .show = _show, \ .store = _store, \ -}; +} + +#define SYSDEV_ATTR(_name,_mode,_show,_store) \ +struct sysdev_attribute attr_##_name = _SYSDEV_ATTR(_name,_mode,_show,_store); extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *); extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *); |
