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drm/amdgpu/cgs: remove import_gpu_mem

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It was added for completeness, but we don't have any users
for it yet.  Daniel noted that it may be racy. Remove it.

Change-Id: I5f5546f8911a4f294008a62dc86a73f3face38d1
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-09-29 10:35:45 -04:00
parent 74b3112e95
commit 2392eec65c
2 changed files with 0 additions and 56 deletions
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39
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
View File

@ -208,44 +208,6 @@ static int amdgpu_cgs_alloc_gpu_mem(void *cgs_device,
return ret;
}
static int amdgpu_cgs_import_gpu_mem(void *cgs_device, int dmabuf_fd,
cgs_handle_t *handle)
{
CGS_FUNC_ADEV;
int r;
uint32_t dma_handle;
struct drm_gem_object *obj;
struct amdgpu_bo *bo;
struct drm_device *dev = adev->ddev;
struct drm_file *file_priv = NULL, *priv;
mutex_lock(&dev->struct_mutex);
list_for_each_entry(priv, &dev->filelist, lhead) {
rcu_read_lock();
if (priv->pid == get_pid(task_pid(current)))
file_priv = priv;
rcu_read_unlock();
if (file_priv)
break;
}
mutex_unlock(&dev->struct_mutex);
r = dev->driver->prime_fd_to_handle(dev,
file_priv, dmabuf_fd,
&dma_handle);
spin_lock(&file_priv->table_lock);
/* Check if we currently have a reference on the object */
obj = idr_find(&file_priv->object_idr, dma_handle);
if (obj == NULL) {
spin_unlock(&file_priv->table_lock);
return -EINVAL;
}
spin_unlock(&file_priv->table_lock);
bo = gem_to_amdgpu_bo(obj);
*handle = (cgs_handle_t)bo;
return 0;
}
static int amdgpu_cgs_free_gpu_mem(void *cgs_device, cgs_handle_t handle)
{
struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
@ -810,7 +772,6 @@ static const struct cgs_ops amdgpu_cgs_ops = {
};
static const struct cgs_os_ops amdgpu_cgs_os_ops = {
amdgpu_cgs_import_gpu_mem,
amdgpu_cgs_add_irq_source,
amdgpu_cgs_irq_get,
amdgpu_cgs_irq_put

17
drivers/gpu/drm/amd/include/cgs_linux.h
View File

@ -26,19 +26,6 @@
#include "cgs_common.h"
/**
* cgs_import_gpu_mem() - Import dmabuf handle
* @cgs_device: opaque device handle
* @dmabuf_fd: DMABuf file descriptor
* @handle: memory handle (output)
*
* Must be called in the process context that dmabuf_fd belongs to.
*
* Return: 0 on success, -errno otherwise
*/
typedef int (*cgs_import_gpu_mem_t)(void *cgs_device, int dmabuf_fd,
cgs_handle_t *handle);
/**
* cgs_irq_source_set_func() - Callback for enabling/disabling interrupt sources
* @private_data: private data provided to cgs_add_irq_source
@ -114,16 +101,12 @@ typedef int (*cgs_irq_get_t)(void *cgs_device, unsigned src_id, unsigned type);
typedef int (*cgs_irq_put_t)(void *cgs_device, unsigned src_id, unsigned type);
struct cgs_os_ops {
cgs_import_gpu_mem_t import_gpu_mem;
/* IRQ handling */
cgs_add_irq_source_t add_irq_source;
cgs_irq_get_t irq_get;
cgs_irq_put_t irq_put;
};
#define cgs_import_gpu_mem(dev,dmabuf_fd,handle) \
CGS_OS_CALL(import_gpu_mem,dev,dmabuf_fd,handle)
#define cgs_add_irq_source(dev,src_id,num_types,set,handler,private_data) \
CGS_OS_CALL(add_irq_source,dev,src_id,num_types,set,handler, \
private_data)