From: Michel Dänzer michel.daenzer@amd.com
Arithmetic using void* pointers isn't defined by the C standard, only as a GCC extension. Avoids compiler warnings:
../../amdgpu/amdgpu_bo.c: In function ‘amdgpu_find_bo_by_cpu_mapping’: ../../amdgpu/amdgpu_bo.c:554:48: warning: pointer of type ‘void *’ used in arithmetic [-Wpointer-arith] if (cpu >= bo->cpu_ptr && cpu < (bo->cpu_ptr + bo->alloc_size)) ^ ../../amdgpu/amdgpu_bo.c:561:23: warning: pointer of type ‘void *’ used in subtraction [-Wpointer-arith] *offset_in_bo = cpu - bo->cpu_ptr; ^
Fixes: 4d454424e1f2 ("amdgpu: add a function to find bo by cpu mapping (v2)") Signed-off-by: Michel Dänzer michel.daenzer@amd.com --- amdgpu/amdgpu.h | 2 +- amdgpu/amdgpu_bo.c | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h index a8c353c6..f2bdeb95 100644 --- a/amdgpu/amdgpu.h +++ b/amdgpu/amdgpu.h @@ -695,7 +695,7 @@ int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev, * */ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev, - void *cpu, + char *cpu, uint64_t size, amdgpu_bo_handle *buf_handle, uint64_t *offset_in_bo); diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c index 86d1c143..ef75f1d0 100644 --- a/amdgpu/amdgpu_bo.c +++ b/amdgpu/amdgpu_bo.c @@ -530,7 +530,7 @@ int amdgpu_bo_wait_for_idle(amdgpu_bo_handle bo, }
int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev, - void *cpu, + char *cpu, uint64_t size, amdgpu_bo_handle *buf_handle, uint64_t *offset_in_bo) @@ -551,14 +551,15 @@ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev, bo = handle_table_lookup(&dev->bo_handles, i); if (!bo || !bo->cpu_ptr || size > bo->alloc_size) continue; - if (cpu >= bo->cpu_ptr && cpu < (bo->cpu_ptr + bo->alloc_size)) + if (cpu >= (char*)bo->cpu_ptr && + cpu < ((char*)bo->cpu_ptr + bo->alloc_size)) break; }
if (i < dev->bo_handles.max_key) { atomic_inc(&bo->refcount); *buf_handle = bo; - *offset_in_bo = cpu - bo->cpu_ptr; + *offset_in_bo = cpu - (char*)bo->cpu_ptr; } else { *buf_handle = NULL; *offset_in_bo = 0;