On USB20CV's Interface Descriptor Test, a series
of SetInterface/GetInterface requests are issued
and gadget driver is required to always return
correct alternate setting.
In one step of the test, g_serial with f_obex
was returning the wrong value (1 instead of 0).
In order to fix this, we will now hold currently
selected alternate setting inside our struct f_obex
and just return that from our ->get_alt()
implementation.
Note that his also simplifies the code a bit.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/gadget/function/f_obex.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/gadget/function/f_obex.c b/drivers/usb/gadget/function/f_obex.c
index 5f40080..1a1a490 100644
--- a/drivers/usb/gadget/function/f_obex.c
+++ b/drivers/usb/gadget/function/f_obex.c
@@ -35,6 +35,7 @@ struct f_obex {
struct gserial port;
u8 ctrl_id;
u8 data_id;
+ u8 cur_alt;
u8 port_num;
u8 can_activate;
};
@@ -235,6 +236,8 @@ static int obex_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
} else
goto fail;
+ obex->cur_alt = alt;
+
return 0;
fail:
@@ -245,10 +248,7 @@ static int obex_get_alt(struct usb_function *f, unsigned intf)
{
struct f_obex *obex = func_to_obex(f);
- if (intf == obex->ctrl_id)
- return 0;
-
- return obex->port.in->driver_data ? 1 : 0;
+ return obex->cur_alt;
}
static void obex_disable(struct usb_function *f)
--
2.1.0.GIT
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