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(parent: 566c05f) | patch
i2c: tegra: Synchronize DMA before termination
authorDmitry Osipenko <digetx@gmail.com>
Tue, 24 Mar 2020 19:12:17 +0000 (22:12 +0300)
committerThierry Reding <treding@nvidia.com>
Fri, 8 May 2020 10:42:33 +0000 (12:42 +0200)
commita70ff65601f1016cb164d2847e9f370e2ed22b39
tree175e60e51ff3be053004ba494bc80c9ce6ce19eftree | snapshot
parent566c05f7cd9a5c6a257d19d4fb91ce35b3b27fb6commit | diff
i2c: tegra: Synchronize DMA before termination

DMA transfer could be completed, but CPU (which handles DMA interrupt)
may get too busy and can't handle the interrupt in a timely manner,
despite of DMA IRQ being raised. In this case the DMA state needs to
synchronized before terminating DMA transfer in order not to miss the
DMA transfer completion.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drivers/i2c/busses/i2c-tegra.c diff | blob | history
Domain: System / Kernel;