]> git.baikalelectronics.ru Git - kernel.git/commit
USB: quirks: Ignore duplicate endpoint on Sound Devices MixPre-D
authorAlan Stern <stern@rowland.harvard.edu>
Wed, 26 Aug 2020 19:46:24 +0000 (15:46 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 27 Aug 2020 07:24:05 +0000 (09:24 +0200)
commit34928c2975a962eeec04e1086ef4096268ef1a26
tree8289576a6ad36ac34301429905329ae34d972fc3
parent5678db5dace7c8fe7ec01375cfec4e0efb57b1d3
USB: quirks: Ignore duplicate endpoint on Sound Devices MixPre-D

The Sound Devices MixPre-D audio card suffers from the same defect
as the Sound Devices USBPre2: an endpoint shared between a normal
audio interface and a vendor-specific interface, in violation of the
USB spec.  Since the USB core now treats duplicated endpoints as bugs
and ignores them, the audio endpoint isn't available and the card
can't be used for audio capture.

Along the same lines as commit c93d51585603 ("USB: quirks: blacklist
duplicate ep on Sound Devices USBPre2"), this patch adds a quirks
entry saying to ignore ep5in for interface 1, leaving it available for
use with standard audio interface 2.

Reported-and-tested-by: Jean-Christophe Barnoud <jcbarnoud@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Fixes: b325971afced ("USB: core: fix check for duplicate endpoints")
Link: https://lore.kernel.org/r/20200826194624.GA412633@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/quirks.c