diff options
| author | Mateusz Litwin <mateusz.litwin@nokia.com> | 2025-12-18 22:33:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-17 16:31:29 +0100 |
| commit | 42440155fe2759da9404d55515b9e96d0818a479 (patch) | |
| tree | 3f572de632c66525f59ff36b43cce9e56fdcfdf0 /include/net/aligned_data.h | |
| parent | 3762535fbbc09350d954ad14f278858290b52208 (diff) | |
spi: cadence-quadspi: Prevent lost complete() call during indirect read
[ Upstream commit d67396c9d697041b385d70ff2fd59cb07ae167e8 ]
A race condition exists between the read loop and IRQ `complete()` call.
An interrupt could call the complete() between the inner loop and
reinit_completion(), potentially losing the completion event and causing
an unnecessary timeout. Moving reinit_completion() before the loop
prevents this. A premature signal will only result in a spurious wakeup
and another wait cycle, which is preferable to waiting for a timeout.
Signed-off-by: Mateusz Litwin <mateusz.litwin@nokia.com>
Link: https://patch.msgid.link/20251218-cqspi_indirect_read_improve-v2-1-396079972f2a@nokia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions