On Wed, Sep 09, 2020 at 01:39:53AM +0300, Dmitry Osipenko wrote: > The DMA code path has been tested well enough and the DMA configuration > performed by tegra_i2c_config_fifo_trig() shouldn't ever fail in practice. > Hence let's remove the obscure transfer-mode switching in order to have a > cleaner and simpler code. Now I2C transfer will be failed if DMA > configuration fails. > > Signed-off-by: Dmitry Osipenko <[email protected]> > --- > drivers/i2c/busses/i2c-tegra.c | 18 ++++++++++-------- > 1 file changed, 10 insertions(+), 8 deletions(-)
I'm not sure that's a good idea. It's always possible that the DMA setup is going to break because of something that's not related to the I2C driver itself. Having the system completely break instead of falling back to PIO mode seems like it would only complicate troubleshooting any such issues. Thierry
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