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path: root/drivers/ieee1394/csr1212.c
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Diffstat (limited to 'drivers/ieee1394/csr1212.c')
-rw-r--r--drivers/ieee1394/csr1212.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 54408cbe8f8f..6c2f55bb9463 100644
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -518,7 +518,7 @@ void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
* will be destroyed as well if their respective refcnts are 0. By means of
* list manipulation, this routine will descend a directory structure in a
* non-recursive manner. */
-void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
+static void csr1212_destroy_keyval(struct csr1212_keyval *kv)
{
struct csr1212_keyval *k, *a;
struct csr1212_dentry dentry;
@@ -566,6 +566,14 @@ void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
}
}
+void csr1212_release_keyval(struct csr1212_keyval *kv)
+{
+ if (kv->refcnt > 1)
+ kv->refcnt--;
+ else
+ csr1212_destroy_keyval(kv);
+}
+
void csr1212_destroy_csr(struct csr1212_csr *csr)
{
struct csr1212_csr_rom_cache *c, *oc;
@@ -1251,7 +1259,8 @@ fail:
return ret;
}
-int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
+static int
+csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
{
struct csr1212_cache_region *cr, *ncr, *newcr = NULL;
struct csr1212_keyval_img *kvi = NULL;
@@ -1412,6 +1421,17 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
return csr1212_parse_keyval(kv, cache);
}
+struct csr1212_keyval *
+csr1212_get_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
+{
+ if (!kv)
+ return NULL;
+ if (!kv->valid)
+ if (csr1212_read_keyval(csr, kv) != CSR1212_SUCCESS)
+ return NULL;
+ return kv;
+}
+
int csr1212_parse_csr(struct csr1212_csr *csr)
{
static const int mr_map[] = { 4, 64, 1024, 0 };
@@ -1443,7 +1463,7 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
csr->root_kv->valid = 0;
csr->root_kv->next = csr->root_kv;
csr->root_kv->prev = csr->root_kv;
- ret = _csr1212_read_keyval(csr, csr->root_kv);
+ ret = csr1212_read_keyval(csr, csr->root_kv);
if (ret != CSR1212_SUCCESS)
return ret;
@@ -1453,7 +1473,7 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
dentry; dentry = dentry->next) {
if (dentry->kv->key.id == CSR1212_KV_ID_EXTENDED_ROM &&
!dentry->kv->valid) {
- ret = _csr1212_read_keyval(csr, dentry->kv);
+ ret = csr1212_read_keyval(csr, dentry->kv);
if (ret != CSR1212_SUCCESS)
return ret;
}