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drm/amdgpu: use kernel is_power_of_2 rather than local version

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Use the kernel provided version.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-06-21 12:31:41 -04:00
parent 6419ec78c6
commit 7611750784
1 changed files with 3 additions and 16 deletions
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19
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1031,19 +1031,6 @@ static unsigned int amdgpu_vga_set_decode(void *cookie, bool state)
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
/**
* amdgpu_check_pot_argument - check that argument is a power of two
*
* @arg: value to check
*
* Validates that a certain argument is a power of two (all asics).
* Returns true if argument is valid.
*/
static bool amdgpu_check_pot_argument(int arg)
{
return (arg & (arg - 1)) == 0;
}
static void amdgpu_check_block_size(struct amdgpu_device *adev)
{
/* defines number of bits in page table versus page directory,
@ -1077,7 +1064,7 @@ static void amdgpu_check_vm_size(struct amdgpu_device *adev)
if (amdgpu_vm_size == -1)
return;
if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
if (!is_power_of_2(amdgpu_vm_size)) {
dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
amdgpu_vm_size);
goto def_value;
@ -1118,7 +1105,7 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
amdgpu_sched_jobs);
amdgpu_sched_jobs = 4;
} else if (!amdgpu_check_pot_argument(amdgpu_sched_jobs)){
} else if (!is_power_of_2(amdgpu_sched_jobs)){
dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n",
amdgpu_sched_jobs);
amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
@ -1138,7 +1125,7 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
amdgpu_check_block_size(adev);
if (amdgpu_vram_page_split != -1 && (amdgpu_vram_page_split < 16 ||
!amdgpu_check_pot_argument(amdgpu_vram_page_split))) {
!is_power_of_2(amdgpu_vram_page_split))) {
dev_warn(adev->dev, "invalid VRAM page split (%d)\n",
amdgpu_vram_page_split);
amdgpu_vram_page_split = 1024;