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authorChristoph Hellwig <hch@lst.de>2017-08-25 18:13:09 +0300
committerChristoph Hellwig <hch@lst.de>2017-09-01 12:59:17 +0300
commit2436bdcda53ff4abb7897c87fa29ef3de8055344 (patch)
treeaa9204da61d1e888fea12ac09c948f5d77e793c5 /drivers/usb
parentb32dbc1e0bf0eaa8bdd725491b361d5fc2f57a85 (diff)
downloadlinux-2436bdcda53ff4abb7897c87fa29ef3de8055344.tar.xz
dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
DMA_MEMORY_IO was never used in the tree, so remove it. That means there is no need for the DMA_MEMORY_MAP flag either now, so remove it as well and change dma_declare_coherent_memory to return a normal errno value. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ohci-sm501.c7
-rw-r--r--drivers/usb/host/ohci-tmio.c9
2 files changed, 6 insertions, 10 deletions
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index a8b8d8b8d9f3..d4e0f7cd96fa 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -123,13 +123,12 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev)
* regular memory. The HCD_LOCAL_MEM flag does just that.
*/
- if (!dma_declare_coherent_memory(dev, mem->start,
+ retval = dma_declare_coherent_memory(dev, mem->start,
mem->start - mem->parent->start,
resource_size(mem),
- DMA_MEMORY_MAP |
- DMA_MEMORY_EXCLUSIVE)) {
+ DMA_MEMORY_EXCLUSIVE);
+ if (retval) {
dev_err(dev, "cannot declare coherent memory\n");
- retval = -ENXIO;
goto err1;
}
diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index cfcfadfc94fc..16d081a093bb 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -227,13 +227,10 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
goto err_ioremap_regs;
}
- if (!dma_declare_coherent_memory(&dev->dev, sram->start,
- sram->start,
- resource_size(sram),
- DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE)) {
- ret = -EBUSY;
+ ret = dma_declare_coherent_memory(&dev->dev, sram->start, sram->start,
+ resource_size(sram), DMA_MEMORY_EXCLUSIVE);
+ if (ret)
goto err_dma_declare;
- }
if (cell->enable) {
ret = cell->enable(dev);