Set the size of bitmap area properly to ensure the proper iova address
to be returned by the bitmap_() API's through alloc_iova(). The current
implementation causes the bitmap index search out of bounds of a page
which can lead to the randomn corruption issues.
Change-Id: Ie57ca0b7465c91d318145ed270b7d47d822c8eeb
Fixes:I88ddd98a76b ("arm/arm64: dma-mapping: Fix iova region size")
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
mapping->nr_bitmaps = 1;
mapping->extensions = extensions;
mapping->base = base;
- mapping->bits = bits;
+ mapping->bits = BITS_PER_BYTE * bitmap_size;
spin_lock_init(&mapping->lock);