diff options
| -rw-r--r-- | drivers/base/swnode.c | 115 | ||||
| -rw-r--r-- | include/linux/property.h | 14 |
2 files changed, 62 insertions, 67 deletions
diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 18a30fb3cc58..3d422918a53d 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -198,93 +198,84 @@ static int property_entry_read_string_array(const struct property_entry *props, static void property_entry_free_data(const struct property_entry *p) { - const void *pointer = property_get_pointer(p); const char * const *src_str; size_t i, nval; - if (!p->is_inline) { - if (p->type == DEV_PROP_STRING && p->pointer) { - src_str = p->pointer; - nval = p->length / sizeof(const char *); - for (i = 0; i < nval; i++) - kfree(src_str[i]); - } - kfree(pointer); - } else if (p->type == DEV_PROP_STRING) { - kfree(p->value.str); + if (p->type == DEV_PROP_STRING) { + src_str = property_get_pointer(p); + nval = p->length / sizeof(*src_str); + for (i = 0; i < nval; i++) + kfree(src_str[i]); } + + if (!p->is_inline) + kfree(p->pointer); + kfree(p->name); } -static const char * const * -property_copy_string_array(const struct property_entry *src) +static bool property_copy_string_array(const char **dst_ptr, + const char * const *src_ptr, + size_t nval) { - const char **d; - const char * const *src_str = src->pointer; - size_t nval = src->length / sizeof(*d); int i; - d = kcalloc(nval, sizeof(*d), GFP_KERNEL); - if (!d) - return NULL; - for (i = 0; i < nval; i++) { - d[i] = kstrdup(src_str[i], GFP_KERNEL); - if (!d[i] && src_str[i]) { + dst_ptr[i] = kstrdup(src_ptr[i], GFP_KERNEL); + if (!dst_ptr[i] && src_ptr[i]) { while (--i >= 0) - kfree(d[i]); - kfree(d); - return NULL; + kfree(dst_ptr[i]); + return false; } } - return d; + return true; } static int property_entry_copy_data(struct property_entry *dst, const struct property_entry *src) { const void *pointer = property_get_pointer(src); - const void *new; - - if (!src->is_inline) { - if (!src->length) - return -ENODATA; - - if (src->type == DEV_PROP_STRING) { - new = property_copy_string_array(src); - if (!new) - return -ENOMEM; - } else { - new = kmemdup(pointer, src->length, GFP_KERNEL); - if (!new) - return -ENOMEM; - } - - dst->pointer = new; - } else if (src->type == DEV_PROP_STRING) { - new = kstrdup(src->value.str, GFP_KERNEL); - if (!new && src->value.str) + void *dst_ptr; + size_t nval; + + /* + * Properties with no data should not be marked as stored + * out of line. + */ + if (!src->is_inline && !src->length) + return -ENODATA; + + if (src->length <= sizeof(dst->value)) { + dst_ptr = &dst->value; + dst->is_inline = true; + } else { + dst_ptr = kmalloc(src->length, GFP_KERNEL); + if (!dst_ptr) return -ENOMEM; + dst->pointer = dst_ptr; + } - dst->is_inline = true; - dst->value.str = new; + if (src->type == DEV_PROP_STRING) { + nval = src->length / sizeof(const char *); + if (!property_copy_string_array(dst_ptr, pointer, nval)) { + if (!dst->is_inline) + kfree(dst->pointer); + return -ENOMEM; + } } else { - dst->is_inline = true; - dst->value = src->value; + memcpy(dst_ptr, pointer, src->length); } dst->length = src->length; dst->type = src->type; dst->name = kstrdup(src->name, GFP_KERNEL); - if (!dst->name) - goto out_free_data; + if (!dst->name) { + property_entry_free_data(dst); + return -ENOMEM; + } return 0; - -out_free_data: - property_entry_free_data(dst); - return -ENOMEM; } /** @@ -484,6 +475,8 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode, const struct software_node_reference *ref; const struct property_entry *prop; struct fwnode_handle *refnode; + u32 nargs_prop_val; + int error; int i; if (!swnode || !swnode->node->references) @@ -501,11 +494,13 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode, return -ENOENT; if (nargs_prop) { - prop = property_entry_get(swnode->node->properties, nargs_prop); - if (!prop) - return -EINVAL; + error = property_entry_read_int_array(swnode->node->properties, + nargs_prop, sizeof(u32), + &nargs_prop_val, 1); + if (error) + return error; - nargs = prop->value.u32_data; + nargs = nargs_prop_val; } if (nargs > NR_FWNODE_REFERENCE_ARGS) diff --git a/include/linux/property.h b/include/linux/property.h index 6c1ca870a9a9..fc819c6ebf33 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -240,11 +240,11 @@ struct property_entry { union { const void *pointer; union { - u8 u8_data; - u16 u16_data; - u32 u32_data; - u64 u64_data; - const char *str; + u8 u8_data[sizeof(u64) / sizeof(u8)]; + u16 u16_data[sizeof(u64) / sizeof(u16)]; + u32 u32_data[sizeof(u64) / sizeof(u32)]; + u64 u64_data[sizeof(u64) / sizeof(u64)]; + const char *str[sizeof(u64) / sizeof(char *)]; } value; }; }; @@ -256,7 +256,7 @@ struct property_entry { */ #define __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_) \ - sizeof(((struct property_entry *)NULL)->value._elem_) + sizeof(((struct property_entry *)NULL)->value._elem_[0]) #define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_)\ (struct property_entry) { \ @@ -294,7 +294,7 @@ struct property_entry { .length = __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_), \ .is_inline = true, \ .type = DEV_PROP_##_Type_, \ - { .value = { ._elem_ = _val_ } }, \ + { .value = { ._elem_[0] = _val_ } }, \ } #define PROPERTY_ENTRY_U8(_name_, _val_) \ |