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of: add of_property_read_variable_* dummy helpers 

Commit a67e9472da ("of: Add array read functions with min/max size
limits") added a new interface for reading variable-length arrays from
DT properties. One user was added in dsa recently and this causes a
build error because that code can be built with CONFIG_OF disabled:

net/dsa/dsa2.c: In function 'dsa_switch_parse_member_of':
net/dsa/dsa2.c:678:7: error: implicit declaration of function 'of_property_read_variable_u32_array'; did you mean 'of_property_read_u32_array'? [-Werror=implicit-function-declaration]

This adds a dummy functions for of_property_read_variable_u32_array()
and a few others that had been missing here. I decided to move
of_property_read_string() and of_property_read_string_helper() in the
process to make it easier to compare the two sets of function prototypes
to make sure they match.

Fixes: 975e6e3221 ("net: dsa: rework switch parsing")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2017-11-06 14:26:10 +01:00 committed by David S. Miller
parent 42ca728b82
commit 96c623e51f
1 changed files with 50 additions and 12 deletions
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62
include/linux/of.h
View File

@ -675,12 +675,6 @@ static inline int of_property_count_elems_of_size(const struct device_node *np,
return -ENOSYS;
}
static inline int of_property_read_u32_index(const struct device_node *np,
const char *propname, u32 index, u32 *out_value)
{
return -ENOSYS;
}
static inline int of_property_read_u8_array(const struct device_node *np,
const char *propname, u8 *out_values, size_t sz)
{
@ -707,16 +701,14 @@ static inline int of_property_read_u64_array(const struct device_node *np,
return -ENOSYS;
}
static inline int of_property_read_string(const struct device_node *np,
const char *propname,
const char **out_string)
static inline int of_property_read_u32_index(const struct device_node *np,
const char *propname, u32 index, u32 *out_value)
{
return -ENOSYS;
}
static inline int of_property_read_string_helper(const struct device_node *np,
const char *propname,
const char **out_strs, size_t sz, int index)
static inline int of_property_read_u64_index(const struct device_node *np,
const char *propname, u32 index, u64 *out_value)
{
return -ENOSYS;
}
@ -744,12 +736,51 @@ static inline int of_n_size_cells(struct device_node *np)
return 0;
}
static inline int of_property_read_variable_u8_array(const struct device_node *np,
const char *propname, u8 *out_values,
size_t sz_min, size_t sz_max)
{
return -ENOSYS;
}
static inline int of_property_read_variable_u16_array(const struct device_node *np,
const char *propname, u16 *out_values,
size_t sz_min, size_t sz_max)
{
return -ENOSYS;
}
static inline int of_property_read_variable_u32_array(const struct device_node *np,
const char *propname,
u32 *out_values,
size_t sz_min,
size_t sz_max)
{
return -ENOSYS;
}
static inline int of_property_read_u64(const struct device_node *np,
const char *propname, u64 *out_value)
{
return -ENOSYS;
}
static inline int of_property_read_variable_u64_array(const struct device_node *np,
const char *propname,
u64 *out_values,
size_t sz_min,
size_t sz_max)
{
return -ENOSYS;
}
static inline int of_property_read_string(const struct device_node *np,
const char *propname,
const char **out_string)
{
return -ENOSYS;
}
static inline int of_property_match_string(const struct device_node *np,
const char *propname,
const char *string)
@ -757,6 +788,13 @@ static inline int of_property_match_string(const struct device_node *np,
return -ENOSYS;
}
static inline int of_property_read_string_helper(const struct device_node *np,
const char *propname,
const char **out_strs, size_t sz, int index)
{
return -ENOSYS;
}
static inline struct device_node *of_parse_phandle(const struct device_node *np,
const char *phandle_name,
int index)