[PATCH] usb: gadget: function: sync f_uac1 ac header baInterfaceNr

[liangshengjun]

f_uac1 audio control header descriptor default set baInterfaceNr[]={1,2}, but 
usb gadget make a configuration descriptor with more interfaces combination, it 
can not confirm f_uac1 function linked first. So always keep 
baInterfaceNr[]={1,2} is correct, and it is necessary to sync baInterfaceNr[] 
with usb_interface_id() value.

Signed-off-by: Liang Shengjun <liangsheng...@hisilicon.com>
---
 drivers/usb/gadget/function/f_uac1.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/function/f_uac1.c 
b/drivers/usb/gadget/function/f_uac1.c
index 28c1a78..d9aeb5c 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -581,6 +581,7 @@ static int f_audio_bind(struct usb_configuration *c, struct 
usb_function *f)
                goto fail;
        as_out_interface_alt_0_desc.bInterfaceNumber = status;
        as_out_interface_alt_1_desc.bInterfaceNumber = status;
+       ac_header_desc.baInterfaceNr[0] = status;
        uac1->as_out_intf = status;
        uac1->as_out_alt = 0;
 
@@ -589,6 +590,7 @@ static int f_audio_bind(struct usb_configuration *c, struct 
usb_function *f)
                goto fail;
        as_in_interface_alt_0_desc.bInterfaceNumber = status;
        as_in_interface_alt_1_desc.bInterfaceNumber = status;
+       ac_header_desc.baInterfaceNr[1] = status;
        uac1->as_in_intf = status;
        uac1->as_in_alt = 0;
 
--
2.7.4