[PATCH] drm/radeon: use kernel is_power_of_2 rather than local version

[Alex Deucher]

Applied.  Thanks!

Alex

On Thu, Dec 30, 2021 at 11:32 AM Christian König
<christian.koenig at amd.com> wrote:
>
> Am 30.12.21 um 06:00 schrieb Jonathan Gray:
> > Follow the amdgpu change made in
> > 7611750784664db46d0db95631e322aeb263dde7
> > and replace local radeon function with is_power_of_2().
> >
> > Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
>
> Reviewed-by: Christian König <christian.koenig at amd.com>
>
> > ---
> >   drivers/gpu/drm/radeon/radeon_device.c | 19 +++----------------
> >   1 file changed, 3 insertions(+), 16 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> > index 4f0fbf667431..15692cb241fc 100644
> > --- a/drivers/gpu/drm/radeon/radeon_device.c
> > +++ b/drivers/gpu/drm/radeon/radeon_device.c
> > @@ -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;
>