Commit 6b207ce8 authored by Jack Wang's avatar Jack Wang Committed by Jassi Brar
Browse files

mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg 



dma_map_sg return 0 on error, fix the error check, and return -EIO
to caller.

Fixes: dbc049ee ("mailbox: Add driver for Broadcom FlexRM ring manager")
Signed-off-by: default avatarJack Wang <jinpu.wang@ionos.com>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent f5fe925d

drivers/mailbox/bcm-flexrm-mailbox.c

+4 −4
Original line number Diff line number Diff line
@@ -622,15 +622,15 @@ static int flexrm_spu_dma_map(struct device *dev, struct brcm_message *msg) 


	rc = dma_map_sg(dev, msg->spu.src, sg_nents(msg->spu.src),

			DMA_TO_DEVICE);

	if (rc < 0)

		return rc;

	if (!rc)

		return -EIO;



	rc = dma_map_sg(dev, msg->spu.dst, sg_nents(msg->spu.dst),

			DMA_FROM_DEVICE);

	if (rc < 0) {

	if (!rc) {

		dma_unmap_sg(dev, msg->spu.src, sg_nents(msg->spu.src),

			     DMA_TO_DEVICE);

		return rc;

		return -EIO;

	}



	return 0;