AcoSail/kernel_optimize_test
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sgiwd93: convert to dma_alloc_noncoherent

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Use the new non-coherent DMA API including proper ownership transfers.
This also means we can allocate the memory as DMA_TO_DEVICE instead
of bidirectional.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Christoph Hellwig 2020-09-01 13:24:21 +02:00
parent 0d71675f87
commit bd9b848557
1 changed files with 7 additions and 7 deletions
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14
drivers/scsi/sgiwd93.c
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@ -95,7 +95,7 @@ void fill_hpc_entries(struct ip22_hostdata *hd, struct scsi_cmnd *cmd, int din)
*/
hcp->desc.pbuf = 0;
hcp->desc.cntinfo = HPCDMA_EOX;
dma_cache_sync(hd->dev, hd->cpu,
dma_sync_single_for_device(hd->dev, hd->dma,
(unsigned long)(hcp + 1) - (unsigned long)hd->cpu,
DMA_TO_DEVICE);
}
@ -234,8 +234,8 @@ static int sgiwd93_probe(struct platform_device *pdev)
hdata = host_to_hostdata(host);
hdata->dev = &pdev->dev;
hdata->cpu = dma_alloc_attrs(&pdev->dev, HPC_DMA_SIZE, &hdata->dma,
GFP_KERNEL, DMA_ATTR_NON_CONSISTENT);
hdata->cpu = dma_alloc_noncoherent(&pdev->dev, HPC_DMA_SIZE,
&hdata->dma, DMA_TO_DEVICE, GFP_KERNEL);
if (!hdata->cpu) {
printk(KERN_WARNING "sgiwd93: Could not allocate memory for "
"host %d buffer.\n", unit);
@ -274,8 +274,8 @@ static int sgiwd93_probe(struct platform_device *pdev)
out_irq:
free_irq(irq, host);
out_free:
dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
DMA_ATTR_NON_CONSISTENT);
dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
DMA_TO_DEVICE);
out_put:
scsi_host_put(host);
out:
@ -291,8 +291,8 @@ static int sgiwd93_remove(struct platform_device *pdev)
scsi_remove_host(host);
free_irq(pd->irq, host);
dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
DMA_ATTR_NON_CONSISTENT);
dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
DMA_TO_DEVICE);
scsi_host_put(host);
return 0;
}