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| author | Tony Lindgren <[email protected]> | 2023-10-23 07:48:54 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2023-10-24 09:35:29 +0000 |
| commit | 6f699743aebf07538e506a46c5965eb8bdd2c716 (patch) | |
| tree | c3eaea7e09b1b62946ba990781abd574b813ffe9 /tools/testing/selftests/bpf/prog_tests/recursion.c | |
| parent | vgacon: fix mips/sibyte build regression (diff) | |
| download | kernel-6f699743aebf07538e506a46c5965eb8bdd2c716.tar.gz kernel-6f699743aebf07538e506a46c5965eb8bdd2c716.zip | |
serial: core: Fix runtime PM handling for pending tx
Richard reported that a serial port may end up sometimes with tx data
pending in the buffer for long periods of time.
Turns out we bail out early on any errors from pm_runtime_get(),
including -EINPROGRESS. To fix the issue, we need to ignore -EINPROGRESS
as we only care about the runtime PM usage count at this point. We check
for an active runtime PM state later on for tx.
Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
Cc: stable <[email protected]>
Reported-by: Richard Purdie <[email protected]>
Cc: Bruce Ashfield <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Randy MacLeod <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
Tested-by: Richard Purdie <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/recursion.c')
0 files changed, 0 insertions, 0 deletions