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dmaengine: sh: fix some NULL dereferences 

The dma_free_coherent() function needs a valid device pointer or it will
crash.

Fixes: 550c591a89a1 ("dmaengine: sh: Add DMAC driver for RZ/G2L SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210827085410.GA9183@kili
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dan Carpenter 2021-08-27 11:54:10 +03:00 committed by Vinod Koul
parent 1e008336b9
commit 11a427be2c
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/sh/rz-dmac.c
View File

@ -919,7 +919,7 @@ err:
for (i = 0; i < channel_num; i++) {
struct rz_dmac_chan *channel = &dmac->channels[i];
dma_free_coherent(NULL,
dma_free_coherent(&pdev->dev,
sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
channel->lmdesc.base,
channel->lmdesc.base_dma);
@ -936,7 +936,7 @@ static int rz_dmac_remove(struct platform_device *pdev)
for (i = 0; i < dmac->n_channels; i++) {
struct rz_dmac_chan *channel = &dmac->channels[i];
dma_free_coherent(NULL,
dma_free_coherent(&pdev->dev,
sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
channel->lmdesc.base,
channel->lmdesc.base_dma);