diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-09-28 08:06:57 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-28 08:06:57 +0200 |
| commit | 6afc0c269c3d20cde05515b00ede00e91fee0be5 (patch) | |
| tree | d54e7fa59df16bb62902129dfd28956d9ae1be19 /drivers/usb/serial/whiteheat.c | |
| parent | 968d712a2565121b269e1037a1517916a9769423 (diff) | |
| parent | 097f70b3c4d84ffccca15195bdfde3a37c0a7c0f (diff) | |
Merge branch 'linus' into perf/core, to pick up fixes before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/serial/whiteheat.c')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 6c3734d2b45a..d3ea90bef84d 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -80,6 +80,8 @@ static int whiteheat_firmware_download(struct usb_serial *serial, static int whiteheat_firmware_attach(struct usb_serial *serial); /* function prototypes for the Connect Tech WhiteHEAT serial converter */ +static int whiteheat_probe(struct usb_serial *serial, + const struct usb_device_id *id); static int whiteheat_attach(struct usb_serial *serial); static void whiteheat_release(struct usb_serial *serial); static int whiteheat_port_probe(struct usb_serial_port *port); @@ -116,6 +118,7 @@ static struct usb_serial_driver whiteheat_device = { .description = "Connect Tech - WhiteHEAT", .id_table = id_table_std, .num_ports = 4, + .probe = whiteheat_probe, .attach = whiteheat_attach, .release = whiteheat_release, .port_probe = whiteheat_port_probe, @@ -217,6 +220,34 @@ static int whiteheat_firmware_attach(struct usb_serial *serial) /***************************************************************************** * Connect Tech's White Heat serial driver functions *****************************************************************************/ + +static int whiteheat_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *endpoint; + size_t num_bulk_in = 0; + size_t num_bulk_out = 0; + size_t min_num_bulk; + unsigned int i; + + iface_desc = serial->interface->cur_altsetting; + + for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { + endpoint = &iface_desc->endpoint[i].desc; + if (usb_endpoint_is_bulk_in(endpoint)) + ++num_bulk_in; + if (usb_endpoint_is_bulk_out(endpoint)) + ++num_bulk_out; + } + + min_num_bulk = COMMAND_PORT + 1; + if (num_bulk_in < min_num_bulk || num_bulk_out < min_num_bulk) + return -ENODEV; + + return 0; +} + static int whiteheat_attach(struct usb_serial *serial) { struct usb_serial_port *command_port; |