spi: pxa2xxx: change "no DMA channels..." msg from debug to warning

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Change the type of the diagnostic message:

"no DMA channels available, using PIO"

from debug to warning.

The lack of an available DMA channel is very important regard the
spi-pxa2xx performance. The transfer speed can be reduced more than 50%.

So it is very important to warn the user about this, without enabling
the full SPI debug with CONFIG_SPI_DEBUG.

Moreover, enabling the full SPI debug only to enable this specific
debug message, the dmesg buffer fills quickly with a lot of
repetitive information during the SPI data transfer.
This cause the loss of all the first important messages
written during the initialization.

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

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Flavio Suligoi 2019-04-05 14:40:22 +02:00 • committed by Mark Brown

parent 5d785141c8

commit 8b57b11bc4

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1 changed files with 1 additions and 1 deletions

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drivers/spi/spi-pxa2xx.c

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