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Merge branch 'parisc-4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 

Pull another parisc update from Helge Deller:
 "Christoph Hellwig provided one patch for the parisc architecture to
  drop the DMA_ERROR_CODE define from the parisc architecture"

* 'parisc-4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: ->mapping_error
This commit is contained in:
Linus Torvalds 2017-07-05 17:41:31 -07:00
parent 55a7b2125c 227145eb38
commit 9b51f04424
3 changed files with 18 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/parisc/include/asm/dma-mapping.h
View File

@ -20,8 +20,6 @@
** flush/purge and allocate "regular" cacheable pages for everything.
*/
#define DMA_ERROR_CODE (~(dma_addr_t)0)
#ifdef CONFIG_PA11
extern const struct dma_map_ops pcxl_dma_ops;
extern const struct dma_map_ops pcx_dma_ops;

10
drivers/parisc/ccio-dma.c
View File

@ -110,6 +110,8 @@
#define CMD_TLB_DIRECT_WRITE 35 /* IO_COMMAND for I/O TLB Writes */
#define CMD_TLB_PURGE 33 /* IO_COMMAND to Purge I/O TLB entry */
#define CCIO_MAPPING_ERROR (~(dma_addr_t)0)
struct ioa_registers {
/* Runway Supervisory Set */
int32_t unused1[12];
@ -742,7 +744,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
BUG_ON(!dev);
ioc = GET_IOC(dev);
if (!ioc)
return DMA_ERROR_CODE;
return CCIO_MAPPING_ERROR;
BUG_ON(size <= 0);
@ -1023,6 +1025,11 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents);
}
static int ccio_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return dma_addr == CCIO_MAPPING_ERROR;
}
static const struct dma_map_ops ccio_ops = {
.dma_supported = ccio_dma_supported,
.alloc = ccio_alloc,
@ -1031,6 +1038,7 @@ static const struct dma_map_ops ccio_ops = {
.unmap_page = ccio_unmap_page,
.map_sg = ccio_map_sg,
.unmap_sg = ccio_unmap_sg,
.mapping_error = ccio_mapping_error,
};
#ifdef CONFIG_PROC_FS

10
drivers/parisc/sba_iommu.c
View File

@ -93,6 +93,8 @@
#define DEFAULT_DMA_HINT_REG 0
#define SBA_MAPPING_ERROR (~(dma_addr_t)0)
struct sba_device *sba_list;
EXPORT_SYMBOL_GPL(sba_list);
@ -725,7 +727,7 @@ sba_map_single(struct device *dev, void *addr, size_t size,
ioc = GET_IOC(dev);
if (!ioc)
return DMA_ERROR_CODE;
return SBA_MAPPING_ERROR;
/* save offset bits */
offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK;
@ -1083,6 +1085,11 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
}
static int sba_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return dma_addr == SBA_MAPPING_ERROR;
}
static const struct dma_map_ops sba_ops = {
.dma_supported = sba_dma_supported,
.alloc = sba_alloc,
@ -1091,6 +1098,7 @@ static const struct dma_map_ops sba_ops = {
.unmap_page = sba_unmap_page,
.map_sg = sba_map_sg,
.unmap_sg = sba_unmap_sg,
.mapping_error = sba_mapping_error,
};