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USB: core: add endpoint-blacklist quirk

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Add a new device quirk that can be used to blacklist endpoints.

Since commit 3e4f8e21c4 ("USB: core: fix check for duplicate
endpoints") USB core ignores any duplicate endpoints found during
descriptor parsing.

In order to handle devices where the first interfaces with duplicate
endpoints are the ones that should have their endpoints ignored, we need
to add a blacklist.

Tested-by: edes <edes@gmx.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200203153830.26394-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2020-02-03 16:38:28 +01:00
committed by Greg Kroah-Hartman
parent b32196e35b
commit 73f8bda9b5
4 changed files with 49 additions and 0 deletions
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3
include/linux/usb/quirks.h
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@@ -69,4 +69,7 @@
/* Hub needs extra delay after resetting its port. */
#define USB_QUIRK_HUB_SLOW_RESET BIT(14)
/* device has blacklisted endpoints */
#define USB_QUIRK_ENDPOINT_BLACKLIST BIT(15)
#endif /* __LINUX_USB_QUIRKS_H */