[PATCH 01/25] drm/i915/stolen: make the object creation interface consistent
Matthew Auld
matthew.auld at intel.com
Mon Sep 30 21:11:39 UTC 2019
From: CQ Tang <cq.tang at intel.com>
Our other backends return an actual error value upon failure. Do the
same for stolen objects, which currently just return NULL on failure.
Signed-off-by: CQ Tang <cq.tang at intel.com>
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/display/intel_display.c | 2 +-
drivers/gpu/drm/i915/display/intel_fbdev.c | 4 +--
drivers/gpu/drm/i915/display/intel_overlay.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 36 +++++++++++---------
drivers/gpu/drm/i915/gt/intel_gt.c | 2 +-
drivers/gpu/drm/i915/gt/intel_rc6.c | 4 +--
drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 2 +-
7 files changed, 28 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f1328c08f4ad..cd43137a2889 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3071,7 +3071,7 @@ intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
base_aligned,
size_aligned);
mutex_unlock(&dev->struct_mutex);
- if (!obj)
+ if (IS_ERR(obj))
return false;
switch (plane_config->tiling) {
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 68338669f054..8e31f254b0d9 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -141,10 +141,10 @@ static int intelfb_alloc(struct drm_fb_helper *helper,
/* If the FB is too big, just don't use it since fbdev is not very
* important and we should probably use that space with FBC or other
* features. */
- obj = NULL;
+ obj = ERR_PTR(-ENODEV);
if (size * 2 < dev_priv->stolen_usable_size)
obj = i915_gem_object_create_stolen(dev_priv, size);
- if (obj == NULL)
+ if (IS_ERR(obj))
obj = i915_gem_object_create_shmem(dev_priv, size);
if (IS_ERR(obj)) {
DRM_ERROR("failed to allocate framebuffer\n");
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 5efef9babadb..fb4e2047efdb 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -1306,7 +1306,7 @@ static int get_registers(struct intel_overlay *overlay, bool use_phys)
mutex_lock(&i915->drm.struct_mutex);
obj = i915_gem_object_create_stolen(i915, PAGE_SIZE);
- if (obj == NULL)
+ if (IS_ERR(obj))
obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
if (IS_ERR(obj)) {
err = PTR_ERR(obj);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index bfbc3e3daf92..3dd295bb61f6 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -585,28 +585,32 @@ i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
int ret;
if (!drm_mm_initialized(&dev_priv->mm.stolen))
- return NULL;
+ return ERR_PTR(-ENODEV);
if (size == 0)
- return NULL;
+ return ERR_PTR(-EINVAL);
stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
if (!stolen)
- return NULL;
+ return ERR_PTR(-ENOMEM);
ret = i915_gem_stolen_insert_node(dev_priv, stolen, size, 4096);
- if (ret) {
- kfree(stolen);
- return NULL;
- }
+ if (ret)
+ goto err_free;
obj = _i915_gem_object_create_stolen(dev_priv, stolen);
- if (obj)
- return obj;
+ if (obj == NULL) {
+ ret = -ENOMEM;
+ goto err_remove;
+ }
+ return obj;
+
+err_remove:
i915_gem_stolen_remove_node(dev_priv, stolen);
+err_free:
kfree(stolen);
- return NULL;
+ return ERR_PTR(ret);
}
struct drm_i915_gem_object *
@@ -622,7 +626,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
int ret;
if (!drm_mm_initialized(&dev_priv->mm.stolen))
- return NULL;
+ return ERR_PTR(-ENODEV);
lockdep_assert_held(&dev_priv->drm.struct_mutex);
@@ -633,11 +637,11 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
if (WARN_ON(size == 0) ||
WARN_ON(!IS_ALIGNED(size, I915_GTT_PAGE_SIZE)) ||
WARN_ON(!IS_ALIGNED(stolen_offset, I915_GTT_MIN_ALIGNMENT)))
- return NULL;
+ return ERR_PTR(-EINVAL);
stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
if (!stolen)
- return NULL;
+ return ERR_PTR(-ENOMEM);
stolen->start = stolen_offset;
stolen->size = size;
@@ -647,7 +651,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
if (ret) {
DRM_DEBUG_DRIVER("failed to allocate stolen space\n");
kfree(stolen);
- return NULL;
+ return ERR_PTR(ret);
}
obj = _i915_gem_object_create_stolen(dev_priv, stolen);
@@ -655,7 +659,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
DRM_DEBUG_DRIVER("failed to allocate stolen object\n");
i915_gem_stolen_remove_node(dev_priv, stolen);
kfree(stolen);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
/* Some objects just need physical mem from stolen space */
@@ -704,5 +708,5 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
i915_gem_object_unpin_pages(obj);
err:
i915_gem_object_put(obj);
- return NULL;
+ return ERR_PTR(ret);
}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 0e5909ee0657..b45ac5c643de 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -331,7 +331,7 @@ static int intel_gt_init_scratch(struct intel_gt *gt, unsigned int size)
int ret;
obj = i915_gem_object_create_stolen(i915, size);
- if (!obj)
+ if (IS_ERR(obj))
obj = i915_gem_object_create_internal(i915, size);
if (IS_ERR(obj)) {
DRM_ERROR("Failed to allocate scratch page\n");
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index d6167dd592e9..dcf189f26624 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -299,7 +299,7 @@ static int vlv_rc6_init(struct intel_rc6 *rc6)
pcbr_offset,
I915_GTT_OFFSET_NONE,
pctx_size);
- if (!pctx)
+ if (IS_ERR(pctx))
return -ENOMEM;
goto out;
@@ -316,7 +316,7 @@ static int vlv_rc6_init(struct intel_rc6 *rc6)
* memory, or any other relevant ranges.
*/
pctx = i915_gem_object_create_stolen(i915, pctx_size);
- if (!pctx) {
+ if (IS_ERR(pctx)) {
DRM_DEBUG("not enough stolen space for PCTX, disabling\n");
return -ENOMEM;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
index 0747b8c9f768..e220c09c6f32 100644
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -1274,7 +1274,7 @@ static struct i915_vma *create_ring_vma(struct i915_ggtt *ggtt, int size)
struct i915_vma *vma;
obj = i915_gem_object_create_stolen(i915, size);
- if (!obj)
+ if (IS_ERR(obj))
obj = i915_gem_object_create_internal(i915, size);
if (IS_ERR(obj))
return ERR_CAST(obj);
--
2.20.1
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