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path: root/drivers/usb/gadget/f_serial.c
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Diffstat (limited to 'drivers/usb/gadget/f_serial.c')
-rw-r--r--drivers/usb/gadget/f_serial.c32
1 files changed, 8 insertions, 24 deletions
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c
index a9ce6261d156..91fdf790ed20 100644
--- a/drivers/usb/gadget/f_serial.c
+++ b/drivers/usb/gadget/f_serial.c
@@ -27,18 +27,10 @@
* if you can arrange appropriate host side drivers.
*/
-struct gser_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
-};
-
struct f_gser {
struct gserial port;
u8 data_id;
u8 port_num;
-
- struct gser_descs fs;
- struct gser_descs hs;
};
static inline struct f_gser *func_to_gser(struct usb_function *f)
@@ -136,12 +128,15 @@ static int gser_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (gser->port.in->driver_data) {
DBG(cdev, "reset generic ttyGS%d\n", gser->port_num);
gserial_disconnect(&gser->port);
- } else {
+ }
+ if (!gser->port.in->desc || !gser->port.out->desc) {
DBG(cdev, "activate generic ttyGS%d\n", gser->port_num);
- gser->port.in->desc = ep_choose(cdev->gadget,
- gser->hs.in, gser->fs.in);
- gser->port.out->desc = ep_choose(cdev->gadget,
- gser->hs.out, gser->fs.out);
+ if (!config_ep_by_speed(cdev->gadget, f, gser->port.in) ||
+ !config_ep_by_speed(cdev->gadget, f, gser->port.out)) {
+ gser->port.in->desc = NULL;
+ gser->port.out->desc = NULL;
+ return -EINVAL;
+ }
}
gserial_connect(&gser->port, gser->port_num);
return 0;
@@ -193,12 +188,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
/* copy descriptors, and track endpoint copies */
f->descriptors = usb_copy_descriptors(gser_fs_function);
- gser->fs.in = usb_find_endpoint(gser_fs_function,
- f->descriptors, &gser_fs_in_desc);
- gser->fs.out = usb_find_endpoint(gser_fs_function,
- f->descriptors, &gser_fs_out_desc);
-
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -211,11 +200,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
/* copy descriptors, and track endpoint copies */
f->hs_descriptors = usb_copy_descriptors(gser_hs_function);
-
- gser->hs.in = usb_find_endpoint(gser_hs_function,
- f->hs_descriptors, &gser_hs_in_desc);
- gser->hs.out = usb_find_endpoint(gser_hs_function,
- f->hs_descriptors, &gser_hs_out_desc);
}
DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n",