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| author | Christian A. Ehrhardt <lk@c--e.de> | 2024-01-21 23:41:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-28 04:41:58 +0300 |
| commit | c9aed03a0a683fd1600ea92f2ad32232d4736272 (patch) | |
| tree | 8d02cc3570b876b8aaf7c9c34213a17eac3f7881 /include/linux/fpga/fpga-mgr.h | |
| parent | 3caf2b2ad7334ef35f55b95f3e1b138c6f77b368 (diff) | |
| download | linux-c9aed03a0a683fd1600ea92f2ad32232d4736272.tar.xz | |
usb: ucsi: Add missing ppm_lock
Calling ->sync_write must be done while holding the PPM lock as
the mailbox logic does not support concurrent commands.
At least since the addition of partner task this means that
ucsi_acknowledge_connector_change should be called with the
PPM lock held as it calls ->sync_write.
Thus protect the only call to ucsi_acknowledge_connector_change
with the PPM. All other calls to ->sync_write already happen
under the PPM lock.
Fixes: b9aa02ca39a4 ("usb: typec: ucsi: Add polling mechanism for partner tasks like alt mode checking")
Cc: stable@vger.kernel.org
Signed-off-by: "Christian A. Ehrhardt" <lk@c--e.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240121204123.275441-2-lk@c--e.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/fpga/fpga-mgr.h')
0 files changed, 0 insertions, 0 deletions