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UPSTREAM: usb: gadget: f_uac2: Fix incorrect setting of bNumEndpoints

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Currently afunc_bind sets std_ac_if_desc.bNumEndpoints to 1 if
controls (mute/volume) are enabled. During next afunc_bind call,
bNumEndpoints would be unchanged and incorrectly set to 1 even
if the controls aren't enabled.

Fix this by resetting the value of bNumEndpoints to 0 on every
afunc_bind call.

Bug: 254441685
Fixes: eaf6cbe09920 ("usb: gadget: f_uac2: add volume and mute support")
Cc: stable <stable@kernel.org>
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Link: https://lore.kernel.org/r/20241211115915.159864-1-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 057bd54dfcf68b1f67e6dfc32a47a72e12198495)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I1da43996d35411850984b6a9a9f79ef4dc63b5b5
This commit is contained in:
Prashanth K
2024-12-11 17:29:15 +05:30
committed by Treehugger Robot
parent e715fae579
commit e386309e11
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/gadget/function/f_uac2.c
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@@ -1131,6 +1131,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
uac2->as_in_alt = 0;
}
std_ac_if_desc.bNumEndpoints = 0;
if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) {
uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc);
if (!uac2->int_ep) {