diff options
Diffstat (limited to 'drivers/ieee1394/csr1212.c')
| -rw-r--r-- | drivers/ieee1394/csr1212.c | 28 |
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; } |