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| author | Alan Stern <stern@rowland.harvard.edu> | 2020-11-19 20:00:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-20 18:34:30 +0300 |
| commit | 184eead057cc7e803558269babc1f2cfb9113ad1 (patch) | |
| tree | 336fc0f128c52ef2fc7bdff5ef0d2bc823704689 /scripts/bpf_helpers_doc.py | |
| parent | 87bed3d7d26c974948a3d6e7176f304b2d41272b (diff) | |
| download | linux-184eead057cc7e803558269babc1f2cfb9113ad1.tar.xz | |
USB: core: Fix regression in Hercules audio card
Commit 3e4f8e21c4f2 ("USB: core: fix check for duplicate endpoints")
aimed to make the USB stack more reliable by detecting and skipping
over endpoints that are duplicated between interfaces. This caused a
regression for a Hercules audio card (reported as Bugzilla #208357),
which contains such non-compliant duplications. Although the
duplications are harmless, skipping the valid endpoints prevented the
device from working.
This patch fixes the regression by adding ENDPOINT_IGNORE quirks for
the Hercules card, telling the kernel to ignore the invalid duplicate
endpoints and thereby allowing the valid endpoints to be used as
intended.
Fixes: 3e4f8e21c4f2 ("USB: core: fix check for duplicate endpoints")
CC: <stable@vger.kernel.org>
Reported-by: Alexander Chalikiopoulos <bugzilla.kernel.org@mrtoasted.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20201119170040.GA576844@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions