Commit 93b11b25 authored by Russell King's avatar Russell King

DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()

The code sequence:
	dev->coherent_dma_mask = DMA_BIT_MASK(24);
	dev->dma_mask = &dev->coherent_dma_mask;
bypasses the architectures check on the DMA mask.  It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 26741a69
......@@ -2004,6 +2004,7 @@ struct parport *parport_pc_probe_port(unsigned long int base,
struct resource *ECR_res = NULL;
struct resource *EPP_res = NULL;
struct platform_device *pdev = NULL;
int ret;
if (!dev) {
/* We need a physical device to attach to, but none was
......@@ -2014,8 +2015,11 @@ struct parport *parport_pc_probe_port(unsigned long int base,
return NULL;
dev = &pdev->dev;
dev->coherent_dma_mask = DMA_BIT_MASK(24);
dev->dma_mask = &dev->coherent_dma_mask;
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(24));
if (ret) {
dev_err(dev, "Unable to set coherent dma mask: disabling DMA\n");
dma = PARPORT_DMA_NONE;
}
}
ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL);
......
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