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| author | Kishon Vijay Abraham I | 2020-04-06 10:58:36 +0530 |
|---|---|---|
| committer | Christoph Hellwig | 2020-04-08 20:52:24 +0200 |
| commit | cdcda0d1f8f4ab84efe7cd9921c98364398aefd7 (patch) | |
| tree | 6e1d686f922eb225bac1ba2f89d8363598eee906 /block | |
| parent | f5e94d10e4c468357019e5c28d48499f677b284f (diff) | |
dma-direct: fix data truncation in dma_direct_get_required_mask()
The upper 32-bit physical address gets truncated inadvertently
when dma_direct_get_required_mask() invokes phys_to_dma_direct().
This results in dma_addressing_limited() return incorrect value
when used in platforms with LPAE enabled.
Fix it here by explicitly type casting 'max_pfn' to phys_addr_t
in order to prevent overflow of intermediate value while evaluating
'(max_pfn - 1) << PAGE_SHIFT'.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions