drm/radeon/kms: use defined constants for crtc/hpd count instead of hard-coded value 6
radeon_driver_irq_preinstall_kms and radeon_driver_irq_uninstall_kms hard code the loop to 6 which happens to be the current maximum number of crtcs and hpd pins; if one day an ASIC with more crtcs (or hpd pins) comes out, this is a trouble waiting to happen. introduce constants for maximum CRTC count, maximum HPD pins count and maximum HDMI blocks count (per FIXME in radeon_irq structure) and correct the loops in radeon_driver_irq_preinstall_kms and radeon_driver_irq_uninstall_kms v2: take care of goofs pointed out by Alex Deucher Signed-off-by: NIlija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by: NAlex Deucher <alexander.deucher@amd.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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