From 72ad5c45f0c9036cbc6d23aeff4e8beb6d8b5e33 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Thu, 2 Jan 2014 19:50:27 -1000 Subject: [PATCH] drm/i915/ppgtt: Fix ioctl errno for "no such context" Without this fix the ioctls silently succeeded (but actually did nothing). It makes all the code which calls into this function way too confusing. v2: Fix destroy IOCTL as well v3: Clarify the other two callers of i915_gem_context_get() to never check for NULL. (Mika) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72903 Signed-off-by: Ben Widawsky Testcase: igt/gem_ctx_exec/basic [danvet: Fix up the commit message and actually bother to mention the testcase this fixes.] Reviewed-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_context.c | 12 +++++++++--- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 4 ++-- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index ebe0f67eac08..44dddc00ca72 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -526,10 +526,16 @@ void i915_gem_context_close(struct drm_device *dev, struct drm_file *file) struct i915_hw_context * i915_gem_context_get(struct drm_i915_file_private *file_priv, u32 id) { + struct i915_hw_context *ctx; + if (!HAS_HW_CONTEXTS(file_priv->dev_priv->dev)) return file_priv->private_default_ctx; - return (struct i915_hw_context *)idr_find(&file_priv->context_idr, id); + ctx = (struct i915_hw_context *)idr_find(&file_priv->context_idr, id); + if (!ctx) + return ERR_PTR(-ENOENT); + + return ctx; } static inline int @@ -776,9 +782,9 @@ int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, return ret; ctx = i915_gem_context_get(file_priv, args->ctx_id); - if (!ctx) { + if (IS_ERR(ctx)) { mutex_unlock(&dev->struct_mutex); - return -ENOENT; + return PTR_ERR(ctx); } idr_remove(&ctx->file_priv->context_idr, ctx->id); diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index a36511db1416..0843e0ec5f1b 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -904,7 +904,7 @@ i915_gem_validate_context(struct drm_device *dev, struct drm_file *file, return ERR_PTR(-EINVAL); ctx = i915_gem_context_get(file->driver_priv, ctx_id); - if (IS_ERR_OR_NULL(ctx)) + if (IS_ERR(ctx)) return ctx; hs = &ctx->hang_stats; @@ -1112,7 +1112,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, } ctx = i915_gem_validate_context(dev, file, ring, ctx_id); - if (IS_ERR_OR_NULL(ctx)) { + if (IS_ERR(ctx)) { mutex_unlock(&dev->struct_mutex); ret = PTR_ERR(ctx); goto pre_mutex_err; -- 2.39.5