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| author | Michael Brown | 2015-05-08 16:07:26 +0200 |
|---|---|---|
| committer | Michael Brown | 2015-05-09 20:37:29 +0200 |
| commit | 5e1e2069fd438b50b085416597d01009d13bc87b (patch) | |
| tree | 56ba7f49849a6dd4e5bc13bf19d8df34141710ca /src/drivers/bus | |
| parent | [usb] Detect missed disconnections (diff) | |
| download | ipxe-5e1e2069fd438b50b085416597d01009d13bc87b.tar.gz ipxe-5e1e2069fd438b50b085416597d01009d13bc87b.tar.xz ipxe-5e1e2069fd438b50b085416597d01009d13bc87b.zip | |
[usb] Maintain a list of all USB buses
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/bus')
| -rw-r--r-- | src/drivers/bus/usb.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/drivers/bus/usb.c b/src/drivers/bus/usb.c index 2b9efa45..3484cba1 100644 --- a/src/drivers/bus/usb.c +++ b/src/drivers/bus/usb.c @@ -40,6 +40,9 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); * */ +/** List of USB buses */ +struct list_head usb_buses = LIST_HEAD_INIT ( usb_buses ); + /****************************************************************************** * * Utility functions @@ -1894,6 +1897,9 @@ int register_usb_bus ( struct usb_bus *bus ) { if ( ( rc = bus->host->open ( bus ) ) != 0 ) goto err_open; + /* Add to list of USB buses */ + list_add_tail ( &bus->list, &usb_buses ); + /* Register root hub */ if ( ( rc = register_usb_hub ( bus->hub ) ) != 0 ) goto err_register_hub; @@ -1905,6 +1911,7 @@ int register_usb_bus ( struct usb_bus *bus ) { unregister_usb_hub ( bus->hub ); err_register_hub: + list_del ( &bus->list ); bus->host->close ( bus ); err_open: return rc; @@ -1927,6 +1934,9 @@ void unregister_usb_bus ( struct usb_bus *bus ) { /* Unregister root hub */ unregister_usb_hub ( bus->hub ); + /* Remove from list of USB buses */ + list_del ( &bus->list ); + /* Close bus */ bus->host->close ( bus ); |