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gpu: nvgpu: fix MISRA errors in nvgpu.common.mm

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Rule 11.3 forbids pointer cast between two different object types.
Rule 13.5 doesn't allow right hand operand of a logical operator to have
persistent side effects.
This patch fixes mentioned rules in nvgpu.common.mm.

Jira NVGPU-3864

Change-Id: I08b7fb4d3fb623f14f8760a50648b39b3e53b233
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2168522
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Vedashree Vidwans
2019-08-05 10:17:31 -07:00
committed by mobile promotions
parent a20739c1f6
commit 88ab1b389c
2 changed files with 17 additions and 11 deletions
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26
drivers/gpu/nvgpu/common/mm/vm_area.c
View File

@@ -32,9 +32,11 @@ struct nvgpu_vm_area *nvgpu_vm_area_find(struct vm_gk20a *vm, u64 addr)
nvgpu_list_for_each_entry(vm_area, &vm->vm_area_list, nvgpu_list_for_each_entry(vm_area, &vm->vm_area_list,
nvgpu_vm_area, vm_area_list) { nvgpu_vm_area, vm_area_list) {
if (addr >= vm_area->addr && if (addr >= vm_area->addr) {
addr < nvgpu_safe_add_u64(vm_area->addr, vm_area->size)) { if (addr < nvgpu_safe_add_u64(vm_area->addr,
return vm_area; vm_area->size)) {
return vm_area;
}
} }
} }
@@ -73,10 +75,13 @@ int nvgpu_vm_area_validate_buffer(struct vm_gk20a *vm,
} }
/* Mapped area should fit inside va, if there's one */ /* Mapped area should fit inside va, if there's one */
if (vm_area != NULL && map_end > nvgpu_safe_add_u64(vm_area->addr, if (vm_area != NULL) {
if (map_end > nvgpu_safe_add_u64(vm_area->addr,
vm_area->size)) { vm_area->size)) {
nvgpu_warn(g, "fixed offset mapping size overflows va node"); nvgpu_warn(g,
return -EINVAL; "fixed offset mapping size overflows va node");
return -EINVAL;
}
} }
/* check that this mapping does not collide with existing /* check that this mapping does not collide with existing
@@ -84,10 +89,11 @@ int nvgpu_vm_area_validate_buffer(struct vm_gk20a *vm,
* that is less than our buffer end */ * that is less than our buffer end */
buffer = nvgpu_vm_find_mapped_buf_less_than( buffer = nvgpu_vm_find_mapped_buf_less_than(
vm, nvgpu_safe_add_u64(map_addr, map_size)); vm, nvgpu_safe_add_u64(map_addr, map_size));
if (buffer != NULL && if (buffer != NULL) {
nvgpu_safe_add_u64(buffer->addr, buffer->size) > map_addr) { if (nvgpu_safe_add_u64(buffer->addr, buffer->size) > map_addr) {
nvgpu_warn(g, "overlapping buffer map requested"); nvgpu_warn(g, "overlapping buffer map requested");
return -EINVAL; return -EINVAL;
}
} }
*pvm_area = vm_area; *pvm_area = vm_area;

2
drivers/gpu/nvgpu/include/nvgpu/posix/atomic.h
View File

@@ -276,7 +276,7 @@ static inline bool nvgpu_atomic64_sub_and_test_impl(long x, nvgpu_atomic64_t *v)
({ \ ({ \
typeof(*(p)) tmp = (old); \ typeof(*(p)) tmp = (old); \
\ \
(void) nvgpu_atomic_cmpxchg((nvgpu_atomic_t *) (p), tmp,\ (void) nvgpu_atomic_cmpxchg((nvgpu_atomic_t *)(void *)(p), tmp,\
(new)); \ (new)); \
tmp; \ tmp; \
}) })