From: Pratham Pratap Date: Wed, 25 Jan 2023 07:27:25 +0000 (+0530) Subject: usb: gadget: f_uac2: Fix incorrect increment of bNumEndpoints X-Git-Tag: v6.1.15~377 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dd63f6f0d94673c44bb84b1fd9ef32baba67f2e9;p=platform%2Fkernel%2Flinux-starfive.git 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 Signed-off-by: Pratham Pratap Signed-off-by: Prashanth K Link: https://lore.kernel.org/r/1674631645-28888-1-git-send-email-quic_prashk@quicinc.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 08726e4..0219cd7 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;