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Check result when setting DMA mask and coherent #6

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Check result when setting DMA mask and coherent #6

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14 changes: 11 additions & 3 deletions mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1749,17 +1749,25 @@ static int mm_probe(struct platform_device *pdev)
if (p == NULL)
return -1;

dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));

#ifdef IPMMU_MMU_SUPPORT
if (!rcar_gen3_ipmmu) {
pr_err("%s MMD ERROR\n", __func__);
return -1;
}

dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
if (ret) {
pr_err("MMD mm_init ERROR unable to set DMA mode: %d.\n", ret);
return -1;
}
ipmmu_mmu_startup();
ipmmu_mmu_initialize();
#else
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret) {
pr_err("MMD mm_init ERROR unable to set DMA mode: %d.\n", ret);
return -1;
}
#endif

misc_register(&misc);
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