phys_addr_t can be 32-bit, in which case smatch will complain:
kernel/dma/pool.c:79 cma_in_zone() warn: always true condition '(end <= ((((32)
== 64)) ?~0:((1 << (32)) - 1))) => (0-u32max <= u32max)'
Just turn the variable into a u64 to make the range check valid.
Fixes: d7e673ec2c8e ("dma-pool: Only allocate from CMA when in same memory
zone")
Reported-by: kernel test robot <l...@intel.com>
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
kernel/dma/pool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
index 1281c0f0442bc5..b59325bad8edda 100644
--- a/kernel/dma/pool.c
+++ b/kernel/dma/pool.c
@@ -60,7 +60,7 @@ static void dma_atomic_pool_size_add(gfp_t gfp, size_t size)
static bool cma_in_zone(gfp_t gfp)
{
unsigned long size;
- phys_addr_t end;
+ u64 end;
struct cma *cma;
cma = dev_get_cma_area(NULL);
--
2.28.0
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