xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: dmabounce: get rid of dma_needs_bounce global function

Browse Source 
Pass the device type specific needs_bounce function in at dmabounce
register time, avoiding the need for a platform specific global
function to do this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-07-04 08:32:21 +01:00
parent c289b2e0cc
commit 0703ed2a6b
5 changed files with 53 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/common/it8152.c
View File

@@ -243,6 +243,13 @@ static struct resource it8152_mem = {
* ITE8152 chip can address up to 64MByte, so all the devices
* connected to ITE8152 (PCI and USB) should have limited DMA window
*/
static int it8152_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
{
dev_dbg(dev, "%s: dma_addr %08x, size %08x\n",
__func__, dma_addr, size);
return dev->bus == &pci_bus_type &&
(dma_addr + size - PHYS_OFFSET) >= SZ_64M;
}
/*
* Setup DMA mask to 64MB on devices connected to ITE8152. Ignore all
@@ -254,7 +261,7 @@ static int it8152_pci_platform_notify(struct device *dev)
if (dev->dma_mask)
*dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
dmabounce_register_dev(dev, 2048, 4096);
dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce);
}
return 0;
}
@@ -267,14 +274,6 @@ static int it8152_pci_platform_notify_remove(struct device *dev)
return 0;
}
int dma_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
{
dev_dbg(dev, "%s: dma_addr %08x, size %08x\n",
__func__, dma_addr, size);
return (dev->bus == &pci_bus_type) &&
((dma_addr + size - PHYS_OFFSET) >= SZ_64M);
}
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
if (mask >= PHYS_OFFSET + SZ_64M - 1)