diff options
| author | Alexandra Winter <wintera@linux.ibm.com> | 2025-09-18 13:04:50 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-23 11:13:21 +0200 |
| commit | d324a2ca3f8efd57f5839aa2690554a5cbb3586f (patch) | |
| tree | aa7a34fc84c2e6fad32feae76286040ad82ececc /drivers/dibs/dibs_main.c | |
| parent | 35758b0032c056cdff3e8f5a70669cb3e2c8d0e4 (diff) | |
dibs: Register smc as dibs_client
Formally register smc as dibs client. Functionality will be moved by
follow-on patches from ism_client to dibs_client until eventually
ism_client can be removed.
As DIBS is only a shim layer without any dependencies, we can depend SMC
on DIBS without adding indirect dependencies. A follow-on patch will
remove dependency of SMC on ISM.
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Ruess <julianr@linux.ibm.com>
Link: https://patch.msgid.link/20250918110500.1731261-5-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/dibs/dibs_main.c')
| -rw-r--r-- | drivers/dibs/dibs_main.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/dibs/dibs_main.c b/drivers/dibs/dibs_main.c index 68e189932fcf..a5d2be9c3246 100644 --- a/drivers/dibs/dibs_main.c +++ b/drivers/dibs/dibs_main.c @@ -20,6 +20,41 @@ MODULE_LICENSE("GPL"); /* use an array rather a list for fast mapping: */ static struct dibs_client *clients[MAX_DIBS_CLIENTS]; static u8 max_client; +static DEFINE_MUTEX(clients_lock); + +int dibs_register_client(struct dibs_client *client) +{ + int i, rc = -ENOSPC; + + mutex_lock(&clients_lock); + for (i = 0; i < MAX_DIBS_CLIENTS; ++i) { + if (!clients[i]) { + clients[i] = client; + client->id = i; + if (i == max_client) + max_client++; + rc = 0; + break; + } + } + mutex_unlock(&clients_lock); + + return rc; +} +EXPORT_SYMBOL_GPL(dibs_register_client); + +int dibs_unregister_client(struct dibs_client *client) +{ + int rc = 0; + + mutex_lock(&clients_lock); + clients[client->id] = NULL; + if (client->id + 1 == max_client) + max_client--; + mutex_unlock(&clients_lock); + return rc; +} +EXPORT_SYMBOL_GPL(dibs_unregister_client); static int __init dibs_init(void) { |