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gpu: nvgpu: Remove NVGPU_IOCTL_GET_BUFFER_INFO

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The IOCTL was introduced for making efficient query of buffer
identity and size. It was never taken into use, and it adds a
dependency to Tegra specific dma_buf API, so remove it.

JIRA NVGPU-4

Change-Id: I194d7bb1f54997900a3be8d39c93331befa225c7
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1648001
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Terje Bergstrom
2018-01-24 13:06:37 -08:00
committed by mobile promotions
parent f229149f97
commit 8ca1a765ee
4 changed files with 3 additions and 53 deletions
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35
drivers/gpu/nvgpu/common/linux/dmabuf.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -140,7 +140,6 @@ int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev)
{
struct gk20a *g = gk20a_get_platform(dev)->g;
struct gk20a_dmabuf_priv *priv;
static u64 priv_count = 0;
priv = dma_buf_get_drvdata(dmabuf, dev);
if (likely(priv))
@@ -159,7 +158,6 @@ int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev)
nvgpu_mutex_init(&priv->lock);
nvgpu_init_list_node(&priv->states);
priv->buffer_id = ++priv_count;
priv->g = g;
dma_buf_set_drvdata(dmabuf, dev, priv, gk20a_mm_delete_priv);
@@ -214,34 +212,3 @@ out:
*state = s;
return err;
}
int gk20a_mm_get_buffer_info(struct device *dev, int dmabuf_fd,
u64 *buffer_id, u64 *buffer_len)
{
struct dma_buf *dmabuf;
struct gk20a_dmabuf_priv *priv;
int err = 0;
dmabuf = dma_buf_get(dmabuf_fd);
if (IS_ERR(dmabuf)) {
dev_warn(dev, "%s: fd %d is not a dmabuf", __func__, dmabuf_fd);
return PTR_ERR(dmabuf);
}
err = gk20a_dmabuf_alloc_drvdata(dmabuf, dev);
if (err) {
dev_warn(dev, "Failed to allocate dmabuf drvdata (err = %d)",
err);
goto clean_up;
}
priv = dma_buf_get_drvdata(dmabuf, dev);
if (likely(priv)) {
*buffer_id = priv->buffer_id;
*buffer_len = dmabuf->size;
}
clean_up:
dma_buf_put(dmabuf);
return err;
}