Messages in this thread | | | Date | Mon, 27 Oct 2014 18:14:54 +0900 | From | Michel Dänzer <> | Subject | Re: [PATCH 02/11] radeon: evergreen: Fix probable mask then right shift defects |
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On 27.10.2014 14:24, Joe Perches wrote: > Precedence of & and >> is not the same and is not left to right. > shift has higher precedence and should be done after the mask. > > Add parentheses around the mask. > > Use the already #defined values instead of hardcoding. > > Signed-off-by: Joe Perches <joe@perches.com> > --- > drivers/gpu/drm/radeon/evergreen.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c > index a31f1ca..a97a685 100644 > --- a/drivers/gpu/drm/radeon/evergreen.c > +++ b/drivers/gpu/drm/radeon/evergreen.c > @@ -3303,7 +3303,8 @@ static void evergreen_gpu_init(struct radeon_device *rdev) > rdev->config.evergreen.tile_config |= > ((gb_addr_config & 0x30000000) >> 28) << 12; > > - num_shader_engines = (gb_addr_config & NUM_SHADER_ENGINES(3) >> 12) + 1; > + num_shader_engines = ((gb_addr_config & NUM_SHADER_ENGINES_MASK) > + >> NUM_SHADER_ENGINES) + 1; ^^^^^^^^^^^^^^^^^^ I think this should be NUM_SHADER_ENGINES_SHIFT?
Looks good to me other than that.
-- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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