[PATCH 5.15 133/135] dma-direct: use the correct size for dma_set_encrypted()

[Greg Kroah-Hartman]

From: Dexuan Cui <decui@xxxxxxxxxxxxx>

commit 3be4562584bba603f33863a00c1c32eecf772ee6 upstream.

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

Fixes: 4d0564785bb0 ("dma-direct: factor out dma_set_{de,en}crypted helpers")
Signed-off-by: Dexuan Cui <decui@xxxxxxxxxxxxx>
Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 kernel/dma/direct.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -323,7 +323,7 @@ void dma_direct_free(struct device *dev,
 	} 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
 		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
 	    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);
 }