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The omapdrm can't use drm_irq_install() and drm_irq_uninstall() as it delegates IRQ handling to the omapdss driver. However, the code still declares IRQ-related operations used by the DRM IRQ helpers, and calls them indirectly. Simplify the implementation by calling the functions directly or inlining them. The irq_enabled checks can then also be simplified as the call stacks guarantees that omap_drm_irq_install() and omap_drm_irq_uninstall() will never run concurrently. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>