On 8/21/20 18:13, Łukasz Stelmach wrote:
Check return values in prepare_dma() and s3c64xx_spi_config() and
propagate errors upwards.
Signed-off-by: Łukasz Stelmach<l.stelmach@xxxxxxxxxxx>
---
drivers/spi/spi-s3c64xx.c | 47 ++++++++++++++++++++++++++++++++-------
1 file changed, 39 insertions(+), 8 deletions(-)
@@ -298,12 +299,24 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma,
desc = dmaengine_prep_slave_sg(dma->ch, sgt->sgl, sgt->nents,
dma->direction, DMA_PREP_INTERRUPT);
+ if (!desc) {
+ dev_err(&sdd->pdev->dev, "unable to prepare %s scatterlist",
+ dma->direction == DMA_DEV_TO_MEM ? "rx" : "tx");
+ return -ENOMEM;
+ }
desc->callback = s3c64xx_spi_dmacb;
desc->callback_param = dma;
dma->cookie = dmaengine_submit(desc);
+ ret = dma_submit_error(dma->cookie);
+ if (ret) {
+ dev_err(&sdd->pdev->dev, "DMA submission failed");
+ return -EIO;
Just return the error value from dma_submit_error() here?
