mmc: core: Only set maximum DMA segment size if DMA is supported

Since upstream commit 334304ac2bac ("dma-mapping: don't return errors
from dma_set_max_seg_size") calling dma_set_max_seg_size() on a device
not supporting DMA results in a warning traceback. This is seen when
booting the sifive_u machine from SD. The underlying SPI controller
(sifive,spi0 compatible) explicitly sets dma_mask to NULL.

Avoid the backtrace by only calling dma_set_max_seg_size() if DMA is
supported.

Signed-off-by: Guenter Roeck <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Robin Murphy <[email protected]>
Tested-by: Geert Uytterhoeven <[email protected]>
Fixes: 334304ac2bac ("dma-mapping: don't return errors from dma_set_max_seg_size")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>

0 files changed, 0 insertions, 0 deletions