Subject: [PATCH v1 08/16] MIPS/jazzdma: return error code from jazz_dma_map_sg()

From: Logan Gunthorpe <[email-masked]>
Date: Thu, 15 Jul 2021 10:45:36 -0600

From: Martin Oliveira <[email-masked]>

The .map_sg() op now expects an error code instead of zero on failure.

vdma_alloc() may fail for different reasons, but since it only supports
indicating an error via a return of DMA_MAPPING_ERROR, we coalesce the
different reasons into -EINVAL.

Signed-off-by: Martin Oliveira <[email-masked]>
Signed-off-by: Logan Gunthorpe <[email-masked]>
Cc: Thomas Bogendoerfer <[email-masked]>
---
 arch/mips/jazz/jazzdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c
index 461457b28982..3b99743435db 100644
--- a/arch/mips/jazz/jazzdma.c
+++ b/arch/mips/jazz/jazzdma.c
@@ -552,7 +552,7 @@ static int jazz_dma_map_sg(struct device *dev, struct scatterlist *sglist,
 				dir);
 		sg->dma_address = vdma_alloc(sg_phys(sg), sg->length);
 		if (sg->dma_address == DMA_MAPPING_ERROR)
-			return 0;
+			return -EINVAL;
 		sg_dma_len(sg) = sg->length;
 	}

--
2.20.1