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drm/radeon: use kernel is_power_of_2 rather than local version

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Follow the amdgpu change made in
7611750784664db46d0db95631e322aeb263dde7
and replace local radeon function with is_power_of_2().

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jonathan Gray 2021-12-30 16:00:19 +11:00 committed by Alex Deucher
parent de05abe6b9
commit 8c2d34eb53
1 changed files with 3 additions and 16 deletions
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19
drivers/gpu/drm/radeon/radeon_device.c
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@ -1085,19 +1085,6 @@ static unsigned int radeon_vga_set_decode(struct pci_dev *pdev, bool state)
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
/**
* radeon_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 radeon_check_pot_argument(int arg)
{
return (arg & (arg - 1)) == 0;
}
/**
* radeon_gart_size_auto - Determine a sensible default GART size
* according to ASIC family.
@ -1126,7 +1113,7 @@ static int radeon_gart_size_auto(enum radeon_family family)
static void radeon_check_arguments(struct radeon_device *rdev)
{
/* vramlimit must be a power of two */
if (!radeon_check_pot_argument(radeon_vram_limit)) {
if (!is_power_of_2(radeon_vram_limit)) {
dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
radeon_vram_limit);
radeon_vram_limit = 0;
@ -1140,7 +1127,7 @@ static void radeon_check_arguments(struct radeon_device *rdev)
dev_warn(rdev->dev, "gart size (%d) too small\n",
radeon_gart_size);
radeon_gart_size = radeon_gart_size_auto(rdev->family);
} else if (!radeon_check_pot_argument(radeon_gart_size)) {
} else if (!is_power_of_2(radeon_gart_size)) {
dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
radeon_gart_size);
radeon_gart_size = radeon_gart_size_auto(rdev->family);
@ -1163,7 +1150,7 @@ static void radeon_check_arguments(struct radeon_device *rdev)
break;
}
if (!radeon_check_pot_argument(radeon_vm_size)) {
if (!is_power_of_2(radeon_vm_size)) {
dev_warn(rdev->dev, "VM size (%d) must be a power of 2\n",
radeon_vm_size);
radeon_vm_size = 4;