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dma-direct: use the correct size for dma_set_encrypted()

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commit 3be4562584 upstream.

The third parameter of dma_set_encrypted() is a size in bytes rather than
the number of pages.

Fixes: 4d0564785b ("dma-direct: factor out dma_set_{de,en}crypted helpers")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dexuan Cui 2022-06-22 12:14:24 -07:00 • committed by Justin Hammond
parent fcb07b82c3
commit f030dee533
1 changed files with 2 additions and 3 deletions
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5
kernel/dma/direct.c
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@ -323,7 +323,7 @@ void dma_direct_free(struct device *dev, size_t size,
} else {
if (IS_ENABLED(CONFIG_ARCH_HAS_DMA_CLEAR_UNCACHED))
arch_dma_clear_uncached(cpu_addr, size);
if (dma_set_encrypted(dev, cpu_addr, 1 << page_order))
if (dma_set_encrypted(dev, cpu_addr, size))
return;
}
@ -360,7 +360,6 @@ void dma_direct_free_pages(struct device *dev, size_t size,
struct page *page, dma_addr_t dma_addr,
enum dma_data_direction dir)
{
unsigned int page_order = get_order(size);
void *vaddr = page_address(page);
/* If cpu_addr is not from an atomic pool, dma_free_from_pool() fails */
@ -368,7 +367,7 @@ void dma_direct_free_pages(struct device *dev, size_t size,
dma_free_from_pool(dev, vaddr, size))
return;
if (dma_set_encrypted(dev, vaddr, 1 << page_order))
if (dma_set_encrypted(dev, vaddr, size))
return;
__dma_direct_free_pages(dev, page, size);
}