drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install

If a non-legacy driver calls these it's valid to assume there is
interrupt support. The flag is really only needed for legacy drivers,
which control IRQ enabling/disabling through the DRM_IOCTL_CONTROL
legacy IOCTL.

Also remove all the flag usage from non-legacy drivers.

v2: Review from Emil:
- improve commit message
- I forgot hibmc, fix that

Cc: linux-arm-kernel@lists.infradead.org
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: virtualization@lists.linux-foundation.org
Cc: spice-devel@lists.freedesktop.org
Cc: amd-gfx@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190129104248.26607-1-daniel.vetter@ffwll.ch

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -1189,7 +1189,7 @@ amdgpu_get_crtc_scanout_position(struct drm_device *dev, unsigned int pipe,
 static struct drm_driver kms_driver = {
 	.driver_features =
 	    DRIVER_USE_AGP | DRIVER_ATOMIC |
-	    DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
+	    DRIVER_IRQ_SHARED | DRIVER_GEM |
 	    DRIVER_PRIME | DRIVER_RENDER | DRIVER_MODESET | DRIVER_SYNCOBJ,
 	.load = amdgpu_driver_load_kms,
 	.open = amdgpu_driver_open_kms,

drivers/gpu/drm/arm/hdlcd_drv.c

@@ -229,7 +229,7 @@ static int hdlcd_debugfs_init(struct drm_minor *minor)
 DEFINE_DRM_GEM_CMA_FOPS(fops);
 
 static struct drm_driver hdlcd_driver = {
-	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
+	.driver_features = DRIVER_GEM |
 			   DRIVER_MODESET | DRIVER_PRIME |
 			   DRIVER_ATOMIC,
 	.irq_handler = hdlcd_irq,

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c

@@ -720,7 +720,7 @@ static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
 DEFINE_DRM_GEM_CMA_FOPS(fops);
 
 static struct drm_driver atmel_hlcdc_dc_driver = {
-	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
+	.driver_features = DRIVER_GEM |
 			   DRIVER_MODESET | DRIVER_PRIME |
 			   DRIVER_ATOMIC,
 	.irq_handler = atmel_hlcdc_dc_irq_handler,

drivers/gpu/drm/drm_irq.c

@@ -103,9 +103,6 @@ int drm_irq_install(struct drm_device *dev, int irq)
 	int ret;
 	unsigned long sh_flags = 0;
 
-	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
-		return -EOPNOTSUPP;
-
 	if (irq == 0)
 		return -EINVAL;
 
@@ -174,9 +171,6 @@ int drm_irq_uninstall(struct drm_device *dev)
 	bool irq_enabled;
 	int i;
 
-	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
-		return -EOPNOTSUPP;
-
 	irq_enabled = dev->irq_enabled;
 	dev->irq_enabled = false;
 

drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c

@@ -137,7 +137,7 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
 DEFINE_DRM_GEM_CMA_FOPS(fsl_dcu_drm_fops);
 
 static struct drm_driver fsl_dcu_drm_driver = {
-	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET
 				| DRIVER_PRIME | DRIVER_ATOMIC,
 	.load			= fsl_dcu_load,
 	.unload			= fsl_dcu_unload,

drivers/gpu/drm/gma500/psb_drv.c

@@ -468,7 +468,7 @@ static const struct file_operations psb_gem_fops = {
 };
 
 static struct drm_driver driver = {
-	.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | \
+	.driver_features = DRIVER_IRQ_SHARED | \
 			   DRIVER_MODESET | DRIVER_GEM,
 	.load = psb_driver_load,
 	.unload = psb_driver_unload,

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c

@@ -56,8 +56,7 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
 }
 
 static struct drm_driver hibmc_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET |
-				  DRIVER_ATOMIC | DRIVER_HAVE_IRQ,
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
 	.fops			= &hibmc_fops,
 	.name			= "hibmc",
 	.date			= "20160828",

drivers/gpu/drm/i915/i915_drv.c

@@ -3209,7 +3209,7 @@ static struct drm_driver driver = {
 	 * deal with them for Intel hardware.
 	 */
 	.driver_features =
-	    DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
+	    DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
 	    DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ,
 	.release = i915_driver_release,
 	.open = i915_driver_open,

drivers/gpu/drm/meson/meson_drv.c

@@ -90,7 +90,7 @@ static irqreturn_t meson_irq(int irq, void *arg)
 DEFINE_DRM_GEM_CMA_FOPS(fops);
 
 static struct drm_driver meson_driver = {
-	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM |
+	.driver_features	= DRIVER_GEM |
 				  DRIVER_MODESET | DRIVER_PRIME |
 				  DRIVER_ATOMIC,
 

drivers/gpu/drm/msm/msm_drv.c

@@ -1063,8 +1063,7 @@ static const struct file_operations fops = {
 };
 
 static struct drm_driver msm_driver = {
-	.driver_features    = DRIVER_HAVE_IRQ |
-				DRIVER_GEM |
+	.driver_features    = DRIVER_GEM |
 				DRIVER_PRIME |
 				DRIVER_RENDER |
 				DRIVER_ATOMIC |

drivers/gpu/drm/mxsfb/mxsfb_drv.c

@@ -322,8 +322,7 @@ DEFINE_DRM_GEM_CMA_FOPS(fops);
 
 static struct drm_driver mxsfb_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET |
-				  DRIVER_PRIME | DRIVER_ATOMIC |
-				  DRIVER_HAVE_IRQ,
+				  DRIVER_PRIME | DRIVER_ATOMIC,
 	.irq_handler		= mxsfb_irq_handler,
 	.irq_preinstall		= mxsfb_irq_preinstall,
 	.irq_uninstall		= mxsfb_irq_preinstall,

drivers/gpu/drm/qxl/qxl_drv.c

@@ -245,7 +245,7 @@ static struct pci_driver qxl_pci_driver = {
 
 static struct drm_driver qxl_driver = {
 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
-			   DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
+			   DRIVER_IRQ_SHARED |
 			   DRIVER_ATOMIC,
 
 	.dumb_create = qxl_mode_dumb_create,

drivers/gpu/drm/radeon/radeon_drv.c

@@ -535,7 +535,7 @@ radeon_get_crtc_scanout_position(struct drm_device *dev, unsigned int pipe,
 static struct drm_driver kms_driver = {
 	.driver_features =
 	    DRIVER_USE_AGP |
-	    DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
+	    DRIVER_IRQ_SHARED | DRIVER_GEM |
 	    DRIVER_PRIME | DRIVER_RENDER,
 	.load = radeon_driver_load_kms,
 	.open = radeon_driver_open_kms,

drivers/gpu/drm/shmobile/shmob_drm_drv.c

@@ -127,7 +127,7 @@ static irqreturn_t shmob_drm_irq(int irq, void *arg)
 DEFINE_DRM_GEM_CMA_FOPS(shmob_drm_fops);
 
 static struct drm_driver shmob_drm_driver = {
-	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET
 				| DRIVER_PRIME,
 	.irq_handler		= shmob_drm_irq,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,

drivers/gpu/drm/tilcdc/tilcdc_drv.c

@@ -512,7 +512,7 @@ static int tilcdc_debugfs_init(struct drm_minor *minor)
 DEFINE_DRM_GEM_CMA_FOPS(fops);
 
 static struct drm_driver tilcdc_driver = {
-	.driver_features    = (DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET |
+	.driver_features    = (DRIVER_GEM | DRIVER_MODESET |
 			       DRIVER_PRIME | DRIVER_ATOMIC),
 	.irq_handler        = tilcdc_irq,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,

drivers/gpu/drm/vc4/vc4_drv.c

@@ -175,7 +175,6 @@ static struct drm_driver vc4_drm_driver = {
 	.driver_features = (DRIVER_MODESET |
 			    DRIVER_ATOMIC |
 			    DRIVER_GEM |
-			    DRIVER_HAVE_IRQ |
 			    DRIVER_RENDER |
 			    DRIVER_PRIME |
 			    DRIVER_SYNCOBJ),

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -1582,7 +1582,7 @@ static const struct file_operations vmwgfx_driver_fops = {
 };
 
 static struct drm_driver driver = {
-	.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
+	.driver_features = DRIVER_IRQ_SHARED |
 	DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER | DRIVER_ATOMIC,
 	.load = vmw_driver_load,
 	.unload = vmw_driver_unload,

drivers/staging/vboxvideo/vbox_drv.c

@@ -221,7 +221,7 @@ static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
 
 static struct drm_driver driver = {
 	.driver_features =
-	    DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
+	    DRIVER_MODESET | DRIVER_GEM | DRIVER_IRQ_SHARED |
 	    DRIVER_PRIME | DRIVER_ATOMIC,
 	.dev_priv_size = 0,