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

swiotlb: remove SWIOTLB_MAP_ERROR

Browse Source 
We can use DMA_MAPPING_ERROR instead, which already maps to the same
value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Christoph Hellwig
2018-12-03 11:42:52 +01:00
parent e5361ca29f
commit b907e20508
3 changed files with 4 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/dma/swiotlb.c
View File

@@ -526,7 +526,7 @@ not_found:
spin_unlock_irqrestore(&io_tlb_lock, flags);
if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit())
dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
return SWIOTLB_MAP_ERROR;
return DMA_MAPPING_ERROR;
found:
spin_unlock_irqrestore(&io_tlb_lock, flags);
@@ -637,7 +637,7 @@ static dma_addr_t swiotlb_bounce_page(struct device *dev, phys_addr_t *phys,
/* Oh well, have to allocate and map a bounce buffer. */
*phys = swiotlb_tbl_map_single(dev, __phys_to_dma(dev, io_tlb_start),
*phys, size, dir, attrs);
if (*phys == SWIOTLB_MAP_ERROR)
if (*phys == DMA_MAPPING_ERROR)
return DMA_MAPPING_ERROR;
/* Ensure that the address returned is DMA'ble */