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path: root/drivers/usb/serial/io_ti.c
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Diffstat (limited to 'drivers/usb/serial/io_ti.c')
-rw-r--r--drivers/usb/serial/io_ti.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index ddbb8fe1046d..2ef757f35162 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -2378,6 +2378,13 @@ static int edge_startup(struct usb_serial *serial)
struct edgeport_serial *edge_serial;
int status;
+ /* Make sure we have the required endpoints when in download mode. */
+ if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) {
+ if (serial->num_bulk_in < serial->num_ports ||
+ serial->num_bulk_out < serial->num_ports)
+ return -ENODEV;
+ }
+
/* create our private serial structure */
edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
if (!edge_serial)