| Message ID | 20190219202128.24993-1-andriy.shevchenko@linux.intel.com (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Commit | ef070b4e4aa25bb5f8632ad196644026c11903bf |
| Headers | show |
| Series | [v1] spi: pxa2xx: Setup maximum supported DMA transfer length | expand |
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 3458912b4efa..a90d0d5b18a5 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1711,6 +1711,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) platform_info->enable_dma = false; } else { master->can_dma = pxa2xx_spi_can_dma; + master->max_dma_len = MAX_DMA_LEN; } }
When the commit b6ced294fb61 ("spi: pxa2xx: Switch to SPI core DMA mapping functionality") switches to SPI core provided DMA helpers, it missed to setup maximum supported DMA transfer length for the controller and thus users mistakenly try to send more data than supported with the following warning: ili9341 spi-PRP0001:01: DMA disabled for transfer length 153600 greater than 65536 Setup maximum supported DMA transfer length in order to make users know the limit. Fixes: b6ced294fb61 ("spi: pxa2xx: Switch to SPI core DMA mapping functionality") Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/spi/spi-pxa2xx.c | 1 + 1 file changed, 1 insertion(+)