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authorFlavio Suligoi <f.suligoi@asem.it>2019-04-05 14:40:22 +0200
committerMark Brown <broonie@kernel.org>2019-04-08 14:09:27 +0700
commit8b57b11bc45ee512566513259cd3c302df3c9dae (patch)
tree9d0ecad15aaeee1a85003c2f3968caba5472e61b /drivers/spi
parent5d785141c8b30d252ebab897429022da379bdb0f (diff)
downloadlinux-8b57b11bc45ee512566513259cd3c302df3c9dae.tar.bz2
spi: pxa2xxx: change "no DMA channels..." msg from debug to warning
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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-pxa2xx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 6160fe0ce7ab..f7068ccfe7d2 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1696,7 +1696,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
if (platform_info->enable_dma) {
status = pxa2xx_spi_dma_setup(drv_data);
if (status) {
- dev_dbg(dev, "no DMA channels available, using PIO\n");
+ dev_warn(dev, "no DMA channels available, using PIO\n");
platform_info->enable_dma = false;
} else {
controller->can_dma = pxa2xx_spi_can_dma;