[PATCH] drm/radeon: evergreen_hpd_init()/_fini(): fix HPD IRQ bitset

Nicolai Stange writes: > The values of all but the RADEON_HPD_NONE members of the radeon_hpd_id > enum transform 1:1 into bit positions within the 'enabled' bitset as > assembled by evergreen_hpd_init(): > > enabled |= 1 << radeon_connector->hpd.hpd; > > However, if ->hpd.hpd happens to equal

[PATCH] drm/radeon: evergreen_hpd_init()/_fini(): fix HPD IRQ bitset

The values of all but the RADEON_HPD_NONE members of the radeon_hpd_id enum transform 1:1 into bit positions within the 'enabled' bitset as assembled by evergreen_hpd_init(): enabled |= 1 << radeon_connector->hpd.hpd; However, if ->hpd.hpd happens to equal RADEON_HPD_NONE == 0xff, UBSAN