linux_dsm_epyc7002/arch/mips/loongson64/platform.c
Tiezhu Yang 72d052e28d
MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
If kzalloc fails, it should return -ENOMEM, otherwise may trigger a NULL
pointer dereference.

Fixes: 3adeb2566b ("MIPS: Loongson: Improve LEFI firmware interface")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
2020-01-10 14:10:24 -08:00

43 lines
1.0 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2009 Lemote Inc.
* Author: Wu Zhangjin, wuzhangjin@gmail.com
* Xiang Yu, xiangy@lemote.com
* Chen Huacai, chenhc@lemote.com
*/
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <asm/bootinfo.h>
#include <boot_param.h>
#include <loongson_hwmon.h>
#include <workarounds.h>
static int __init loongson3_platform_init(void)
{
int i;
struct platform_device *pdev;
if (loongson_sysconf.ecname[0] != '\0')
platform_device_register_simple(loongson_sysconf.ecname, -1, NULL, 0);
for (i = 0; i < loongson_sysconf.nr_sensors; i++) {
if (loongson_sysconf.sensors[i].type > SENSOR_FAN)
continue;
pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
if (!pdev)
return -ENOMEM;
pdev->name = loongson_sysconf.sensors[i].name;
pdev->id = loongson_sysconf.sensors[i].id;
pdev->dev.platform_data = &loongson_sysconf.sensors[i];
platform_device_register(pdev);
}
return 0;
}
arch_initcall(loongson3_platform_init);