diff options
| author | Samuel Holland <samuel@sholland.org> | 2019-10-25 17:30:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-28 17:47:07 +0100 |
| commit | bfa3dbb343f664573292afb9e44f9abeb81a19de (patch) | |
| tree | 3e1204f6c4db90e4c7b2621ed3a39bae3ef5e56f /tools/perf/util/c++/clang.cpp | |
| parent | 18b74067ac78a2dea65783314c13df98a53d071c (diff) | |
usb: xhci: fix Immediate Data Transfer endianness
The arguments to queue_trb are always byteswapped to LE for placement in
the ring, but this should not happen in the case of immediate data; the
bytes copied out of transfer_buffer are already in the correct order.
Add a complementary byteswap so the bytes end up in the ring correctly.
This was observed on BE ppc64 with a "Texas Instruments TUSB73x0
SuperSpeed USB 3.0 xHCI Host Controller [104c:8241]" as a ch341
usb-serial adapter ("1a86:7523 QinHeng Electronics HL-340 USB-Serial
adapter") always transmitting the same character (generally NUL) over
the serial link regardless of the key pressed.
Cc: <stable@vger.kernel.org> # 5.2+
Fixes: 33e39350ebd2 ("usb: xhci: add Immediate Data Transfer support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1572013829-14044-3-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/util/c++/clang.cpp')
0 files changed, 0 insertions, 0 deletions