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iommu/dma: Prune redundant pgprot arguments

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Somewhere amongst previous refactorings, the pgprot value in
__iommu_dma_alloc_noncontiguous() became entirely unused, and the one
used in iommu_dma_alloc_remap() can be computed locally rather than by
its one remaining caller. Clean 'em up.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/c2a81b72df59a71a13f8bad94f834e627c4c93dd.1717504749.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2024-06-04 13:39:09 +01:00 committed by Joerg Roedel
parent b5c29fba72
commit 8d485a6960
1 changed files with 6 additions and 10 deletions
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16
drivers/iommu/dma-iommu.c
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@ -939,8 +939,7 @@ static struct page **__iommu_dma_alloc_pages(struct device *dev,
* but an IOMMU which supports smaller pages might not map the whole thing.
*/
static struct page **__iommu_dma_alloc_noncontiguous(struct device *dev,
size_t size, struct sg_table *sgt, gfp_t gfp, pgprot_t prot,
unsigned long attrs)
size_t size, struct sg_table *sgt, gfp_t gfp, unsigned long attrs)
{
struct iommu_domain *domain = iommu_get_dma_domain(dev);
struct iommu_dma_cookie *cookie = domain->iova_cookie;
@ -1014,15 +1013,14 @@ out_free_pages:
}
static void *iommu_dma_alloc_remap(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp, pgprot_t prot,
unsigned long attrs)
dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
{
struct page **pages;
struct sg_table sgt;
void *vaddr;
pgprot_t prot = dma_pgprot(dev, PAGE_KERNEL, attrs);
pages = __iommu_dma_alloc_noncontiguous(dev, size, &sgt, gfp, prot,
attrs);
pages = __iommu_dma_alloc_noncontiguous(dev, size, &sgt, gfp, attrs);
if (!pages)
return NULL;
*dma_handle = sgt.sgl->dma_address;
@ -1049,8 +1047,7 @@ static struct sg_table *iommu_dma_alloc_noncontiguous(struct device *dev,
if (!sh)
return NULL;
sh->pages = __iommu_dma_alloc_noncontiguous(dev, size, &sh->sgt, gfp,
PAGE_KERNEL, attrs);
sh->pages = __iommu_dma_alloc_noncontiguous(dev, size, &sh->sgt, gfp, attrs);
if (!sh->pages) {
kfree(sh);
return NULL;
@ -1619,8 +1616,7 @@ static void *iommu_dma_alloc(struct device *dev, size_t size,
if (gfpflags_allow_blocking(gfp) &&
!(attrs & DMA_ATTR_FORCE_CONTIGUOUS)) {
return iommu_dma_alloc_remap(dev, size, handle, gfp,
dma_pgprot(dev, PAGE_KERNEL, attrs), attrs);
return iommu_dma_alloc_remap(dev, size, handle, gfp, attrs);
}
if (IS_ENABLED(CONFIG_DMA_DIRECT_REMAP) &&