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| author | Pratham Pratap <quic_ppratap@quicinc.com> | 2023-01-25 12:57:25 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-09 11:28:21 +0100 |
| commit | dd63f6f0d94673c44bb84b1fd9ef32baba67f2e9 (patch) | |
| tree | f09f525bef35d78ceb6288597231b2e2756438d7 | |
| parent | b79ba5953f6fdc5559389ad415620bffc24f024b (diff) | |
| download | linux-stable-dd63f6f0d94673c44bb84b1fd9ef32baba67f2e9.tar.gz linux-stable-dd63f6f0d94673c44bb84b1fd9ef32baba67f2e9.tar.bz2 linux-stable-dd63f6f0d94673c44bb84b1fd9ef32baba67f2e9.zip | |
usb: gadget: f_uac2: Fix incorrect increment of bNumEndpoints
commit 2fa89458af9993fab8054daf827f38881e2ad473 upstream.
Currently connect/disconnect of USB cable calls afunc_bind and
eventually increments the bNumEndpoints. Performing multiple
plugin/plugout will increment bNumEndpoints incorrectly, and on
the next plug-in it leads to invalid configuration of descriptor
and hence enumeration fails.
Fix this by resetting the value of bNumEndpoints to 1 on every
afunc_bind call.
Fixes: 40c73b30546e ("usb: gadget: f_uac2: add adaptive sync support for capture")
Cc: stable <stable@kernel.org>
Signed-off-by: Pratham Pratap <quic_ppratap@quicinc.com>
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Link: https://lore.kernel.org/r/1674631645-28888-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/function/f_uac2.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 08726e4c68a5..0219cd79493a 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -1142,6 +1142,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) } std_as_out_if0_desc.bInterfaceNumber = ret; std_as_out_if1_desc.bInterfaceNumber = ret; + std_as_out_if1_desc.bNumEndpoints = 1; uac2->as_out_intf = ret; uac2->as_out_alt = 0; |