diff options
| author | Ville Baillie <villeb@bytesnap.co.uk> | 2021-09-21 07:21:32 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-01 19:34:55 +0100 |
| commit | 75e33c55ae8fb4a177fe07c284665e1d61b02560 (patch) | |
| tree | 9d8abf8b170a1e019648b89124d7fd884cd6400b /drivers/spi/spi-atmel.c | |
| parent | 59c4e190b10cd2d6edccb5c238a3d2bda071a018 (diff) | |
| download | lwn-75e33c55ae8fb4a177fe07c284665e1d61b02560.tar.gz lwn-75e33c55ae8fb4a177fe07c284665e1d61b02560.zip | |
spi: atmel: Fix PDC transfer setup bug
atmel_spi_dma_map_xfer to never be called in PDC mode. This causes the
driver to silently fail.
This patch changes the conditional to match the behaviour of the
previous commit before the refactor.
Fixes: 5fa5e6dec762 ("spi: atmel: Switch to transfer_one transfer method")
Signed-off-by: Ville Baillie <villeb@bytesnap.co.uk>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210921072132.21831-1-villeb@bytesnap.co.uk
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-atmel.c')
| -rw-r--r-- | drivers/spi/spi-atmel.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index 788dcdf25f00..f872cf196c2f 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -1301,7 +1301,7 @@ static int atmel_spi_one_transfer(struct spi_master *master, * DMA map early, for performance (empties dcache ASAP) and * better fault reporting. */ - if ((!master->cur_msg_mapped) + if ((!master->cur_msg->is_dma_mapped) && as->use_pdc) { if (atmel_spi_dma_map_xfer(as, xfer) < 0) return -ENOMEM; @@ -1381,7 +1381,7 @@ static int atmel_spi_one_transfer(struct spi_master *master, } } - if (!master->cur_msg_mapped + if (!master->cur_msg->is_dma_mapped && as->use_pdc) atmel_spi_dma_unmap_xfer(master, xfer); |