mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
b9e7ea65e1
MISRA Rule-17.7 requires the return value of all functions to be used. Fix is either to use the return value or change the function to return void. This patch contains fix for all 17.7 violations instandard C functions in OS/Linux interface. JIRA NVGPU-1036 Change-Id: I39b20f1d0e1a1da56d452f2c3d5ee049666cefe8 Signed-off-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1929900 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/*
|
|
* 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,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/firmware.h>
|
|
|
|
#include <nvgpu/kmem.h>
|
|
#include <nvgpu/bug.h>
|
|
#include <nvgpu/firmware.h>
|
|
#include <nvgpu/gk20a.h>
|
|
|
|
#include "platform_gk20a.h"
|
|
#include "os_linux.h"
|
|
|
|
static const struct firmware *do_request_firmware(struct device *dev,
|
|
const char *prefix, const char *fw_name, int flags)
|
|
{
|
|
const struct firmware *fw;
|
|
char *fw_path = NULL;
|
|
int path_len, err;
|
|
|
|
if (prefix) {
|
|
path_len = strlen(prefix) + strlen(fw_name);
|
|
path_len += 2; /* for the path separator and zero terminator*/
|
|
|
|
fw_path = nvgpu_kzalloc(get_gk20a(dev),
|
|
sizeof(*fw_path) * path_len);
|
|
if (!fw_path)
|
|
return NULL;
|
|
|
|
(void) sprintf(fw_path, "%s/%s", prefix, fw_name);
|
|
fw_name = fw_path;
|
|
}
|
|
|
|
if (flags & NVGPU_REQUEST_FIRMWARE_NO_WARN)
|
|
err = request_firmware_direct(&fw, fw_name, dev);
|
|
else
|
|
err = request_firmware(&fw, fw_name, dev);
|
|
|
|
nvgpu_kfree(get_gk20a(dev), fw_path);
|
|
if (err)
|
|
return NULL;
|
|
return fw;
|
|
}
|
|
|
|
/* This is a simple wrapper around request_firmware that takes 'fw_name' and
|
|
* applies an IP specific relative path prefix to it. The caller is
|
|
* responsible for calling nvgpu_release_firmware later. */
|
|
struct nvgpu_firmware *nvgpu_request_firmware(struct gk20a *g,
|
|
const char *fw_name,
|
|
int flags)
|
|
{
|
|
struct device *dev = dev_from_gk20a(g);
|
|
struct nvgpu_firmware *fw;
|
|
const struct firmware *linux_fw;
|
|
|
|
/* current->fs is NULL when calling from SYS_EXIT.
|
|
Add a check here to prevent crash in request_firmware */
|
|
if (!current->fs || !fw_name)
|
|
return NULL;
|
|
|
|
fw = nvgpu_kzalloc(g, sizeof(*fw));
|
|
if (!fw)
|
|
return NULL;
|
|
|
|
linux_fw = do_request_firmware(dev, g->name, fw_name, flags);
|
|
|
|
#ifdef CONFIG_TEGRA_GK20A
|
|
/* TO BE REMOVED - Support loading from legacy SOC specific path. */
|
|
if (!linux_fw && !(flags & NVGPU_REQUEST_FIRMWARE_NO_SOC)) {
|
|
struct gk20a_platform *platform = gk20a_get_platform(dev);
|
|
linux_fw = do_request_firmware(dev,
|
|
platform->soc_name, fw_name, flags);
|
|
}
|
|
#endif
|
|
|
|
if (!linux_fw)
|
|
goto err;
|
|
|
|
fw->data = nvgpu_kmalloc(g, linux_fw->size);
|
|
if (!fw->data)
|
|
goto err_release;
|
|
|
|
(void) memcpy(fw->data, linux_fw->data, linux_fw->size);
|
|
fw->size = linux_fw->size;
|
|
|
|
release_firmware(linux_fw);
|
|
|
|
return fw;
|
|
|
|
err_release:
|
|
release_firmware(linux_fw);
|
|
err:
|
|
nvgpu_kfree(g, fw);
|
|
return NULL;
|
|
}
|
|
|
|
void nvgpu_release_firmware(struct gk20a *g, struct nvgpu_firmware *fw)
|
|
{
|
|
if(!fw)
|
|
return;
|
|
|
|
nvgpu_kfree(g, fw->data);
|
|
nvgpu_kfree(g, fw);
|
|
}
|