diff options
| -rw-r--r-- | drivers/of/of_reserved_mem.c | 41 | ||||
| -rw-r--r-- | include/linux/of_reserved_mem.h | 12 |
2 files changed, 41 insertions, 12 deletions
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 1a84bc0d5fa8..f61e8739502a 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -358,6 +358,25 @@ int of_reserved_mem_device_init_by_idx(struct device *dev, EXPORT_SYMBOL_GPL(of_reserved_mem_device_init_by_idx); /** + * of_reserved_mem_device_init_by_name() - assign named reserved memory region + * to given device + * @dev: pointer to the device to configure + * @np: pointer to the device node with 'memory-region' property + * @name: name of the selected memory region + * + * Returns: 0 on success or a negative error-code on failure. + */ +int of_reserved_mem_device_init_by_name(struct device *dev, + struct device_node *np, + const char *name) +{ + int idx = of_property_match_string(np, "memory-region-names", name); + + return of_reserved_mem_device_init_by_idx(dev, np, idx); +} +EXPORT_SYMBOL_GPL(of_reserved_mem_device_init_by_name); + +/** * of_reserved_mem_device_release() - release reserved memory device structures * @dev: Pointer to the device to deconfigure * @@ -366,24 +385,22 @@ EXPORT_SYMBOL_GPL(of_reserved_mem_device_init_by_idx); */ void of_reserved_mem_device_release(struct device *dev) { - struct rmem_assigned_device *rd; - struct reserved_mem *rmem = NULL; + struct rmem_assigned_device *rd, *tmp; + LIST_HEAD(release_list); mutex_lock(&of_rmem_assigned_device_mutex); - list_for_each_entry(rd, &of_rmem_assigned_device_list, list) { - if (rd->dev == dev) { - rmem = rd->rmem; - list_del(&rd->list); - kfree(rd); - break; - } + list_for_each_entry_safe(rd, tmp, &of_rmem_assigned_device_list, list) { + if (rd->dev == dev) + list_move_tail(&rd->list, &release_list); } mutex_unlock(&of_rmem_assigned_device_mutex); - if (!rmem || !rmem->ops || !rmem->ops->device_release) - return; + list_for_each_entry_safe(rd, tmp, &release_list, list) { + if (rd->rmem && rd->rmem->ops && rd->rmem->ops->device_release) + rd->rmem->ops->device_release(rd->rmem, dev); - rmem->ops->device_release(rmem, dev); + kfree(rd); + } } EXPORT_SYMBOL_GPL(of_reserved_mem_device_release); diff --git a/include/linux/of_reserved_mem.h b/include/linux/of_reserved_mem.h index 60f541912ccf..8216a4156263 100644 --- a/include/linux/of_reserved_mem.h +++ b/include/linux/of_reserved_mem.h @@ -3,6 +3,7 @@ #define __OF_RESERVED_MEM_H #include <linux/device.h> +#include <linux/of.h> struct of_phandle_args; struct reserved_mem_ops; @@ -33,6 +34,9 @@ typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem); int of_reserved_mem_device_init_by_idx(struct device *dev, struct device_node *np, int idx); +int of_reserved_mem_device_init_by_name(struct device *dev, + struct device_node *np, + const char *name); void of_reserved_mem_device_release(struct device *dev); void fdt_init_reserved_mem(void); @@ -45,6 +49,14 @@ static inline int of_reserved_mem_device_init_by_idx(struct device *dev, { return -ENOSYS; } + +static inline int of_reserved_mem_device_init_by_name(struct device *dev, + struct device_node *np, + const char *name) +{ + return -ENOSYS; +} + static inline void of_reserved_mem_device_release(struct device *pdev) { } static inline void fdt_init_reserved_mem(void) { } |