diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rapidio/rio.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index f861b728f80e..9a7b2168d1d5 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -32,6 +32,7 @@ #include "rio.h" static LIST_HEAD(rio_mports); +static unsigned char next_portid; /** * rio_local_get_device_id - Get the base/extended device id for a port @@ -1164,8 +1165,33 @@ int __devinit rio_init_mports(void) device_initcall_sync(rio_init_mports); +static int hdids[RIO_MAX_MPORTS + 1]; + +static int rio_get_hdid(int index) +{ + if (!hdids[0] || hdids[0] <= index || index >= RIO_MAX_MPORTS) + return -1; + + return hdids[index + 1]; +} + +static int rio_hdid_setup(char *str) +{ + (void)get_options(str, ARRAY_SIZE(hdids), hdids); + return 1; +} + +__setup("riohdid=", rio_hdid_setup); + void rio_register_mport(struct rio_mport *port) { + if (next_portid >= RIO_MAX_MPORTS) { + pr_err("RIO: reached specified max number of mports\n"); + return; + } + + port->id = next_portid++; + port->host_deviceid = rio_get_hdid(port->id); list_add_tail(&port->node, &rio_mports); } |