From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 24 Apr 2012 06:29:42 +0000 (+0200)
Subject: drm/i915: check for kms in dri1 ioctls
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=cd9d4e9f9fa2809dedc637406fa15016bfcb2ad0;p=~shefty%2Frdma-dev.git

drm/i915: check for kms in dri1 ioctls

Calling these when gem assumes full control of the hw won't end
in anything else than tears. So be a bit more paranoid here.

Just serves as documentation.

v2: Bail out with ENODEV as suggested by Chris Wilson.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index d49bd82e24e..e2983a9a125 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -239,6 +239,9 @@ static int i915_dma_init(struct drm_device *dev, void *data,
 	drm_i915_init_t *init = data;
 	int retcode = 0;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	switch (init->func) {
 	case I915_INIT_DMA:
 		retcode = i915_initialize(dev, init);
@@ -581,6 +584,9 @@ static int i915_flush_ioctl(struct drm_device *dev, void *data,
 {
 	int ret;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 
 	mutex_lock(&dev->struct_mutex);
@@ -601,6 +607,9 @@ static int i915_batchbuffer(struct drm_device *dev, void *data,
 	int ret;
 	struct drm_clip_rect *cliprects = NULL;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!dev_priv->allow_batchbuffer) {
 		DRM_ERROR("Batchbuffer ioctl disabled\n");
 		return -EINVAL;
@@ -658,6 +667,9 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
 	DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
 			cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 
 	if (cmdbuf->num_cliprects < 0)
@@ -714,6 +726,9 @@ static int i915_flip_bufs(struct drm_device *dev, void *data,
 {
 	int ret;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	DRM_DEBUG_DRIVER("%s\n", __func__);
 
 	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
@@ -850,6 +865,9 @@ static int i915_set_status_page(struct drm_device *dev, void *data,
 	drm_i915_hws_addr_t *hws = data;
 	struct intel_ring_buffer *ring = LP_RING(dev_priv);
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!I915_NEED_GFX_HWS(dev))
 		return -EINVAL;
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 24e1dd25257..0211263aad7 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1612,6 +1612,9 @@ int i915_irq_emit(struct drm_device *dev, void *data,
 	drm_i915_irq_emit_t *emit = data;
 	int result;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!dev_priv || !LP_RING(dev_priv)->virtual_start) {
 		DRM_ERROR("called with no initialization\n");
 		return -EINVAL;
@@ -1639,6 +1642,9 @@ int i915_irq_wait(struct drm_device *dev, void *data,
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	drm_i915_irq_wait_t *irqwait = data;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!dev_priv) {
 		DRM_ERROR("called with no initialization\n");
 		return -EINVAL;
@@ -1801,6 +1807,9 @@ int i915_vblank_pipe_set(struct drm_device *dev, void *data,
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!dev_priv) {
 		DRM_ERROR("called with no initialization\n");
 		return -EINVAL;
@@ -1815,6 +1824,9 @@ int i915_vblank_pipe_get(struct drm_device *dev, void *data,
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	drm_i915_vblank_pipe_t *pipe = data;
 
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return -ENODEV;
+
 	if (!dev_priv) {
 		DRM_ERROR("called with no initialization\n");
 		return -EINVAL;