redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

of: Move definition of of_find_next_cache_node into common code. 

Since the definition of_find_next_cache_node is architecture independent,
the existing definition in powerpc can be moved to driver/of/base.c

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Sudeep KarkadaNagesha 2013-09-18 11:53:05 +01:00 committed by Benjamin Herrenschmidt
parent afaf539854
commit a3e31b4588
4 changed files with 33 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/prom.h
View File

@ -44,9 +44,6 @@ void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
extern void kdump_move_device_tree(void);
/* cache lookup */
struct device_node *of_find_next_cache_node(struct device_node *np);
#ifdef CONFIG_NUMA
extern int of_node_to_nid(struct device_node *device);
#else

31
arch/powerpc/kernel/prom.c
View File

@ -760,37 +760,6 @@ void __init early_init_devtree(void *params)
*
*******/
/**
* of_find_next_cache_node - Find a node's subsidiary cache
* @np: node of type "cpu" or "cache"
*
* Returns a node pointer with refcount incremented, use
* of_node_put() on it when done. Caller should hold a reference
* to np.
*/
struct device_node *of_find_next_cache_node(struct device_node *np)
{
struct device_node *child;
const phandle *handle;
handle = of_get_property(np, "l2-cache", NULL);
if (!handle)
handle = of_get_property(np, "next-level-cache", NULL);
if (handle)
return of_find_node_by_phandle(be32_to_cpup(handle));
/* OF on pmac has nodes instead of properties named "l2-cache"
* beneath CPU nodes.
*/
if (!strcmp(np->type, "cpu"))
for_each_child_of_node(np, child)
if (!strcmp(child->type, "cache"))
return child;
return NULL;
}
/**
* of_get_ibm_chip_id - Returns the IBM "chip-id" of a device
* @np: device node of the device

31
drivers/of/base.c
View File

@ -1884,3 +1884,34 @@ int of_device_is_stdout_path(struct device_node *dn)
return of_stdout == dn;
}
EXPORT_SYMBOL_GPL(of_device_is_stdout_path);
/**
* of_find_next_cache_node - Find a node's subsidiary cache
* @np: node of type "cpu" or "cache"
*
* Returns a node pointer with refcount incremented, use
* of_node_put() on it when done. Caller should hold a reference
* to np.
*/
struct device_node *of_find_next_cache_node(const struct device_node *np)
{
struct device_node *child;
const phandle *handle;
handle = of_get_property(np, "l2-cache", NULL);
if (!handle)
handle = of_get_property(np, "next-level-cache", NULL);
if (handle)
return of_find_node_by_phandle(be32_to_cpup(handle));
/* OF on pmac has nodes instead of properties named "l2-cache"
* beneath CPU nodes.
*/
if (!strcmp(np->type, "cpu"))
for_each_child_of_node(np, child)
if (!strcmp(child->type, "cache"))
return child;
return NULL;
}

2
include/linux/of.h
View File

@ -226,6 +226,8 @@ static inline int of_get_child_count(const struct device_node *np)
return num;
}
/* cache lookup */
extern struct device_node *of_find_next_cache_node(const struct device_node *);
extern struct device_node *of_find_node_with_property(
struct device_node *from, const char *prop_name);
#define for_each_node_with_property(dn, prop_name) \