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| author | Christopher S M Hall <christopher.s.hall@intel.com> | 2025-04-01 16:35:34 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 10:45:41 +0200 |
| commit | b45b7a0bb88fb9306985f73feb8ebdac9c313a31 (patch) | |
| tree | 5a8c9f67780b4e1c2d09bdf187c7dfea9ef766db /tools/testing/radix-tree/linux.c | |
| parent | d8dde48a1ca6d14833d617b1885e21ca0da592c8 (diff) | |
igc: add lock preventing multiple simultaneous PTM transactions
[ Upstream commit 1a931c4f5e6862e61a4b130cb76b422e1415f644 ]
Add a mutex around the PTM transaction to prevent multiple transactors
Multiple processes try to initiate a PTM transaction, one or all may
fail. This can be reproduced by running two instances of the
following:
$ sudo phc2sys -O 0 -i tsn0 -m
PHC2SYS exits with:
"ioctl PTP_OFFSET_PRECISE: Connection timed out" when the PTM transaction
fails
Note: Normally two instance of PHC2SYS will not run, but one process
should not break another.
Fixes: a90ec8483732 ("igc: Add support for PTP getcrosststamp()")
Signed-off-by: Christopher S M Hall <christopher.s.hall@intel.com>
Reviewed-by: Corinna Vinschen <vinschen@redhat.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Mor Bar-Gabay <morx.bar.gabay@intel.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/testing/radix-tree/linux.c')
0 files changed, 0 insertions, 0 deletions