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Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

浏览代码 
Pull crypto updates from Herbert Xu:
 "API:
   - Enforce the setting of keys for keyed aead/hash/skcipher
     algorithms.
   - Add multibuf speed tests in tcrypt.

  Algorithms:
   - Improve performance of sha3-generic.
   - Add native sha512 support on arm64.
   - Add v8.2 Crypto Extentions version of sha3/sm3 on arm64.
   - Avoid hmac nesting by requiring underlying algorithm to be unkeyed.
   - Add cryptd_max_cpu_qlen module parameter to cryptd.

  Drivers:
   - Add support for EIP97 engine in inside-secure.
   - Add inline IPsec support to chelsio.
   - Add RevB core support to crypto4xx.
   - Fix AEAD ICV check in crypto4xx.
   - Add stm32 crypto driver.
   - Add support for BCM63xx platforms in bcm2835 and remove bcm63xx.
   - Add Derived Key Protocol (DKP) support in caam.
   - Add Samsung Exynos True RNG driver.
   - Add support for Exynos5250+ SoCs in exynos PRNG driver"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (166 commits)
  crypto: picoxcell - Fix error handling in spacc_probe()
  crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions code
  crypto: arm64/sm3 - new v8.2 Crypto Extensions implementation
  crypto: arm64/sha3 - new v8.2 Crypto Extensions implementation
  crypto: testmgr - add new testcases for sha3
  crypto: sha3-generic - export init/update/final routines
  crypto: sha3-generic - simplify code
  crypto: sha3-generic - rewrite KECCAK transform to help the compiler optimize
  crypto: sha3-generic - fixes for alignment and big endian operation
  crypto: aesni - handle zero length dst buffer
  crypto: artpec6 - remove select on non-existing CRYPTO_SHA384
  hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()
  crypto: stm32 - remove redundant dev_err call in stm32_cryp_probe()
  crypto: axis - remove unnecessary platform_get_resource() error check
  crypto: testmgr - test misuse of result in ahash
  crypto: inside-secure - make function safexcel_try_push_requests static
  crypto: aes-generic - fix aes-generic regression on powerpc
  crypto: chelsio - Fix indentation warning
  crypto: arm64/sha1-ce - get rid of literal pool
  crypto: arm64/sha2-ce - move the round constant table to .rodata section
  ...
这个提交包含在：
Linus Torvalds
2018-01-31 14:22:45 -08:00
父节点 2cfa1cd3da 2d55807b7f
当前提交 a103950e0d
共修改 162 个文件，包含 7494 行新增和 2705 行删除
下载 Patch 文件 下载 Diff 文件 展开所有文件 折叠所有文件

32
drivers/char/hw_random/Kconfig
查看文件

@@ -73,26 +73,14 @@ config HW_RANDOM_ATMEL
If unsure, say Y.
config HW_RANDOM_BCM63XX
tristate "Broadcom BCM63xx Random Number Generator support"
depends on BCM63XX || BMIPS_GENERIC
default HW_RANDOM
---help---
This driver provides kernel-side support for the Random Number
Generator hardware found on the Broadcom BCM63xx SoCs.
To compile this driver as a module, choose M here: the
module will be called bcm63xx-rng
If unusure, say Y.
config HW_RANDOM_BCM2835
tristate "Broadcom BCM2835 Random Number Generator support"
depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X
tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
default HW_RANDOM
---help---
This driver provides kernel-side support for the Random Number
Generator hardware found on the Broadcom BCM2835 SoCs.
Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
To compile this driver as a module, choose M here: the
module will be called bcm2835-rng
@@ -436,6 +424,18 @@ config HW_RANDOM_S390
If unsure, say Y.
config HW_RANDOM_EXYNOS
tristate "Samsung Exynos True Random Number Generator support"
depends on ARCH_EXYNOS || COMPILE_TEST
default HW_RANDOM
---help---
This driver provides support for the True Random Number
Generator available in Exynos SoCs.
To compile this driver as a module, choose M here: the module
will be called exynos-trng.
If unsure, say Y.
endif # HW_RANDOM
config UML_RANDOM

2
drivers/char/hw_random/Makefile
查看文件

@@ -9,11 +9,11 @@ obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o
obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o
obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o
obj-$(CONFIG_HW_RANDOM_ATMEL) += atmel-rng.o
obj-$(CONFIG_HW_RANDOM_BCM63XX) += bcm63xx-rng.o
obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o
obj-$(CONFIG_HW_RANDOM_N2RNG) += n2-rng.o
n2-rng-y := n2-drv.o n2-asm.o
obj-$(CONFIG_HW_RANDOM_VIA) += via-rng.o
obj-$(CONFIG_HW_RANDOM_EXYNOS) += exynos-trng.o
obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o
obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o
obj-$(CONFIG_HW_RANDOM_OMAP3_ROM) += omap3-rom-rng.o

171
drivers/char/hw_random/bcm2835-rng.c
查看文件

@@ -15,6 +15,7 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/printk.h>
#include <linux/clk.h>
#define RNG_CTRL 0x0
#define RNG_STATUS 0x4
@@ -29,116 +30,180 @@
#define RNG_INT_OFF 0x1
static void __init nsp_rng_init(void __iomem *base)
{
u32 val;
struct bcm2835_rng_priv {
struct hwrng rng;
void __iomem *base;
bool mask_interrupts;
struct clk *clk;
};
/* mask the interrupt */
val = readl(base + RNG_INT_MASK);
val |= RNG_INT_OFF;
writel(val, base + RNG_INT_MASK);
static inline struct bcm2835_rng_priv *to_rng_priv(struct hwrng *rng)
{
return container_of(rng, struct bcm2835_rng_priv, rng);
}
static inline u32 rng_readl(struct bcm2835_rng_priv *priv, u32 offset)
{
/* MIPS chips strapped for BE will automagically configure the
* peripheral registers for CPU-native byte order.
*/
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
return __raw_readl(priv->base + offset);
else
return readl(priv->base + offset);
}
static inline void rng_writel(struct bcm2835_rng_priv *priv, u32 val,
u32 offset)
{
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
__raw_writel(val, priv->base + offset);
else
writel(val, priv->base + offset);
}
static int bcm2835_rng_read(struct hwrng *rng, void *buf, size_t max,
bool wait)
{
void __iomem *rng_base = (void __iomem *)rng->priv;
struct bcm2835_rng_priv *priv = to_rng_priv(rng);
u32 max_words = max / sizeof(u32);
u32 num_words, count;
while ((__raw_readl(rng_base + RNG_STATUS) >> 24) == 0) {
while ((rng_readl(priv, RNG_STATUS) >> 24) == 0) {
if (!wait)
return 0;
cpu_relax();
}
num_words = readl(rng_base + RNG_STATUS) >> 24;
num_words = rng_readl(priv, RNG_STATUS) >> 24;
if (num_words > max_words)
num_words = max_words;
for (count = 0; count < num_words; count++)
((u32 *)buf)[count] = readl(rng_base + RNG_DATA);
((u32 *)buf)[count] = rng_readl(priv, RNG_DATA);
return num_words * sizeof(u32);
}
static struct hwrng bcm2835_rng_ops = {
.name = "bcm2835",
.read = bcm2835_rng_read,
static int bcm2835_rng_init(struct hwrng *rng)
{
struct bcm2835_rng_priv *priv = to_rng_priv(rng);
int ret = 0;
u32 val;
if (!IS_ERR(priv->clk)) {
ret = clk_prepare_enable(priv->clk);
if (ret)
return ret;
}
if (priv->mask_interrupts) {
/* mask the interrupt */
val = rng_readl(priv, RNG_INT_MASK);
val |= RNG_INT_OFF;
rng_writel(priv, val, RNG_INT_MASK);
}
/* set warm-up count & enable */
rng_writel(priv, RNG_WARMUP_COUNT, RNG_STATUS);
rng_writel(priv, RNG_RBGEN, RNG_CTRL);
return ret;
}
static void bcm2835_rng_cleanup(struct hwrng *rng)
{
struct bcm2835_rng_priv *priv = to_rng_priv(rng);
/* disable rng hardware */
rng_writel(priv, 0, RNG_CTRL);
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
}
struct bcm2835_rng_of_data {
bool mask_interrupts;
};
static const struct bcm2835_rng_of_data nsp_rng_of_data = {
.mask_interrupts = true,
};
static const struct of_device_id bcm2835_rng_of_match[] = {
{ .compatible = "brcm,bcm2835-rng"},
{ .compatible = "brcm,bcm-nsp-rng", .data = nsp_rng_init},
{ .compatible = "brcm,bcm5301x-rng", .data = nsp_rng_init},
{ .compatible = "brcm,bcm-nsp-rng", .data = &nsp_rng_of_data },
{ .compatible = "brcm,bcm5301x-rng", .data = &nsp_rng_of_data },
{ .compatible = "brcm,bcm6368-rng"},
{},
};
static int bcm2835_rng_probe(struct platform_device *pdev)
{
const struct bcm2835_rng_of_data *of_data;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
void (*rng_setup)(void __iomem *base);
const struct of_device_id *rng_id;
void __iomem *rng_base;
struct bcm2835_rng_priv *priv;
struct resource *r;
int err;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
platform_set_drvdata(pdev, priv);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
/* map peripheral */
rng_base = of_iomap(np, 0);
if (!rng_base) {
dev_err(dev, "failed to remap rng regs");
return -ENODEV;
}
bcm2835_rng_ops.priv = (unsigned long)rng_base;
priv->base = devm_ioremap_resource(dev, r);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
/* Clock is optional on most platforms */
priv->clk = devm_clk_get(dev, NULL);
priv->rng.name = pdev->name;
priv->rng.init = bcm2835_rng_init;
priv->rng.read = bcm2835_rng_read;
priv->rng.cleanup = bcm2835_rng_cleanup;
rng_id = of_match_node(bcm2835_rng_of_match, np);
if (!rng_id) {
iounmap(rng_base);
if (!rng_id)
return -EINVAL;
}
/* Check for rng init function, execute it */
rng_setup = rng_id->data;
if (rng_setup)
rng_setup(rng_base);
/* set warm-up count & enable */
__raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
__raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
/* Check for rng init function, execute it */
of_data = rng_id->data;
if (of_data)
priv->mask_interrupts = of_data->mask_interrupts;
/* register driver */
err = hwrng_register(&bcm2835_rng_ops);
if (err) {
err = devm_hwrng_register(dev, &priv->rng);
if (err)
dev_err(dev, "hwrng registration failed\n");
iounmap(rng_base);
} else
else
dev_info(dev, "hwrng registered\n");
return err;
}
static int bcm2835_rng_remove(struct platform_device *pdev)
{
void __iomem *rng_base = (void __iomem *)bcm2835_rng_ops.priv;
/* disable rng hardware */
__raw_writel(0, rng_base + RNG_CTRL);
/* unregister driver */
hwrng_unregister(&bcm2835_rng_ops);
iounmap(rng_base);
return 0;
}
MODULE_DEVICE_TABLE(of, bcm2835_rng_of_match);
static struct platform_device_id bcm2835_rng_devtype[] = {
{ .name = "bcm2835-rng" },
{ .name = "bcm63xx-rng" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, bcm2835_rng_devtype);
static struct platform_driver bcm2835_rng_driver = {
.driver = {
.name = "bcm2835-rng",
.of_match_table = bcm2835_rng_of_match,
},
.probe = bcm2835_rng_probe,
.remove = bcm2835_rng_remove,
.id_table = bcm2835_rng_devtype,
};
module_platform_driver(bcm2835_rng_driver);

154
drivers/char/hw_random/bcm63xx-rng.c
查看文件

@@ -1,154 +0,0 @@
/*
* Broadcom BCM63xx Random Number Generator support
*
* Copyright (C) 2011, Florian Fainelli <florian@openwrt.org>
* Copyright (C) 2009, Broadcom Corporation
*
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/hw_random.h>
#include <linux/of.h>
#define RNG_CTRL 0x00
#define RNG_EN (1 << 0)
#define RNG_STAT 0x04
#define RNG_AVAIL_MASK (0xff000000)
#define RNG_DATA 0x08
#define RNG_THRES 0x0c
#define RNG_MASK 0x10
struct bcm63xx_rng_priv {
struct hwrng rng;
struct clk *clk;
void __iomem *regs;
};
#define to_rng_priv(rng) container_of(rng, struct bcm63xx_rng_priv, rng)
static int bcm63xx_rng_init(struct hwrng *rng)
{
struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
u32 val;
int error;
error = clk_prepare_enable(priv->clk);
if (error)
return error;
val = __raw_readl(priv->regs + RNG_CTRL);
val |= RNG_EN;
__raw_writel(val, priv->regs + RNG_CTRL);
return 0;
}
static void bcm63xx_rng_cleanup(struct hwrng *rng)
{
struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
u32 val;
val = __raw_readl(priv->regs + RNG_CTRL);
val &= ~RNG_EN;
__raw_writel(val, priv->regs + RNG_CTRL);
clk_disable_unprepare(priv->clk);
}
static int bcm63xx_rng_data_present(struct hwrng *rng, int wait)
{
struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
return __raw_readl(priv->regs + RNG_STAT) & RNG_AVAIL_MASK;
}
static int bcm63xx_rng_data_read(struct hwrng *rng, u32 *data)
{
struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
*data = __raw_readl(priv->regs + RNG_DATA);
return 4;
}
static int bcm63xx_rng_probe(struct platform_device *pdev)
{
struct resource *r;
int ret;
struct bcm63xx_rng_priv *priv;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(&pdev->dev, "no iomem resource\n");
return -ENXIO;
}
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->rng.name = pdev->name;
priv->rng.init = bcm63xx_rng_init;
priv->rng.cleanup = bcm63xx_rng_cleanup;
priv->rng.data_present = bcm63xx_rng_data_present;
priv->rng.data_read = bcm63xx_rng_data_read;
priv->clk = devm_clk_get(&pdev->dev, "ipsec");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
dev_err(&pdev->dev, "no clock for device: %d\n", ret);
return ret;
}
if (!devm_request_mem_region(&pdev->dev, r->start,
resource_size(r), pdev->name)) {
dev_err(&pdev->dev, "request mem failed");
return -EBUSY;
}
priv->regs = devm_ioremap_nocache(&pdev->dev, r->start,
resource_size(r));
if (!priv->regs) {
dev_err(&pdev->dev, "ioremap failed");
return -ENOMEM;
}
ret = devm_hwrng_register(&pdev->dev, &priv->rng);
if (ret) {
dev_err(&pdev->dev, "failed to register rng device: %d\n",
ret);
return ret;
}
dev_info(&pdev->dev, "registered RNG driver\n");
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id bcm63xx_rng_of_match[] = {
{ .compatible = "brcm,bcm6368-rng", },
{},
};
MODULE_DEVICE_TABLE(of, bcm63xx_rng_of_match);
#endif
static struct platform_driver bcm63xx_rng_driver = {
.probe = bcm63xx_rng_probe,
.driver = {
.name = "bcm63xx-rng",
.of_match_table = of_match_ptr(bcm63xx_rng_of_match),
},
};
module_platform_driver(bcm63xx_rng_driver);
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_DESCRIPTION("Broadcom BCM63xx RNG driver");
MODULE_LICENSE("GPL");

4
drivers/char/hw_random/core.c
查看文件

@@ -306,6 +306,10 @@ static int enable_best_rng(void)
ret = ((new_rng == current_rng) ? 0 : set_current_rng(new_rng));
if (!ret)
cur_rng_set_by_user = 0;
} else {
drop_current_rng();
cur_rng_set_by_user = 0;
ret = 0;
}
return ret;

235
drivers/char/hw_random/exynos-trng.c 普通文件
查看文件

@@ -0,0 +1,235 @@
// SPDX-License-Identifier: GPL-2.0
/*
* RNG driver for Exynos TRNGs
*
* Author: Łukasz Stelmach <l.stelmach@samsung.com>
*
* Copyright 2017 (c) Samsung Electronics Software, Inc.
*
* Based on the Exynos PRNG driver drivers/crypto/exynos-rng by
* Krzysztof Kozłowski <krzk@kernel.org>
*/
#include <linux/clk.h>
#include <linux/crypto.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/hw_random.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#define EXYNOS_TRNG_CLKDIV (0x0)
#define EXYNOS_TRNG_CTRL (0x20)
#define EXYNOS_TRNG_CTRL_RNGEN BIT(31)
#define EXYNOS_TRNG_POST_CTRL (0x30)
#define EXYNOS_TRNG_ONLINE_CTRL (0x40)
#define EXYNOS_TRNG_ONLINE_STAT (0x44)
#define EXYNOS_TRNG_ONLINE_MAXCHI2 (0x48)
#define EXYNOS_TRNG_FIFO_CTRL (0x50)
#define EXYNOS_TRNG_FIFO_0 (0x80)
#define EXYNOS_TRNG_FIFO_1 (0x84)
#define EXYNOS_TRNG_FIFO_2 (0x88)
#define EXYNOS_TRNG_FIFO_3 (0x8c)
#define EXYNOS_TRNG_FIFO_4 (0x90)
#define EXYNOS_TRNG_FIFO_5 (0x94)
#define EXYNOS_TRNG_FIFO_6 (0x98)
#define EXYNOS_TRNG_FIFO_7 (0x9c)
#define EXYNOS_TRNG_FIFO_LEN (8)
#define EXYNOS_TRNG_CLOCK_RATE (500000)
struct exynos_trng_dev {
struct device *dev;
void __iomem *mem;
struct clk *clk;
struct hwrng rng;
};
static int exynos_trng_do_read(struct hwrng *rng, void *data, size_t max,
bool wait)
{
struct exynos_trng_dev *trng;
int val;
max = min_t(size_t, max, (EXYNOS_TRNG_FIFO_LEN * 4));
trng = (struct exynos_trng_dev *)rng->priv;
writel_relaxed(max * 8, trng->mem + EXYNOS_TRNG_FIFO_CTRL);
val = readl_poll_timeout(trng->mem + EXYNOS_TRNG_FIFO_CTRL, val,
val == 0, 200, 1000000);
if (val < 0)
return val;
memcpy_fromio(data, trng->mem + EXYNOS_TRNG_FIFO_0, max);
return max;
}
static int exynos_trng_init(struct hwrng *rng)
{
struct exynos_trng_dev *trng = (struct exynos_trng_dev *)rng->priv;
unsigned long sss_rate;
u32 val;
sss_rate = clk_get_rate(trng->clk);
/*
* For most TRNG circuits the clock frequency of under 500 kHz
* is safe.
*/
val = sss_rate / (EXYNOS_TRNG_CLOCK_RATE * 2);
if (val > 0x7fff) {
dev_err(trng->dev, "clock divider too large: %d", val);
return -ERANGE;
}
val = val << 1;
writel_relaxed(val, trng->mem + EXYNOS_TRNG_CLKDIV);
/* Enable the generator. */
val = EXYNOS_TRNG_CTRL_RNGEN;
writel_relaxed(val, trng->mem + EXYNOS_TRNG_CTRL);
/*
* Disable post-processing. /dev/hwrng is supposed to deliver
* unprocessed data.
*/
writel_relaxed(0, trng->mem + EXYNOS_TRNG_POST_CTRL);
return 0;
}
static int exynos_trng_probe(struct platform_device *pdev)
{
struct exynos_trng_dev *trng;
struct resource *res;
int ret = -ENOMEM;
trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);
if (!trng)
return ret;
trng->rng.name = devm_kstrdup(&pdev->dev, dev_name(&pdev->dev),
GFP_KERNEL);
if (!trng->rng.name)
return ret;
trng->rng.init = exynos_trng_init;
trng->rng.read = exynos_trng_do_read;
trng->rng.priv = (unsigned long) trng;
platform_set_drvdata(pdev, trng);
trng->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
trng->mem = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(trng->mem))
return PTR_ERR(trng->mem);
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_get_sync(&pdev->dev);
if (ret < 0) {
dev_err(&pdev->dev, "Could not get runtime PM.\n");
goto err_pm_get;
}
trng->clk = devm_clk_get(&pdev->dev, "secss");
if (IS_ERR(trng->clk)) {
ret = PTR_ERR(trng->clk);
dev_err(&pdev->dev, "Could not get clock.\n");
goto err_clock;
}
ret = clk_prepare_enable(trng->clk);
if (ret) {
dev_err(&pdev->dev, "Could not enable the clk.\n");
goto err_clock;
}
ret = hwrng_register(&trng->rng);
if (ret) {
dev_err(&pdev->dev, "Could not register hwrng device.\n");
goto err_register;
}
dev_info(&pdev->dev, "Exynos True Random Number Generator.\n");
return 0;
err_register:
clk_disable_unprepare(trng->clk);
err_clock:
pm_runtime_put_sync(&pdev->dev);
err_pm_get:
pm_runtime_disable(&pdev->dev);
return ret;
}
static int exynos_trng_remove(struct platform_device *pdev)
{
struct exynos_trng_dev *trng = platform_get_drvdata(pdev);
hwrng_unregister(&trng->rng);
clk_disable_unprepare(trng->clk);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
static int __maybe_unused exynos_trng_suspend(struct device *dev)
{
pm_runtime_put_sync(dev);
return 0;
}
static int __maybe_unused exynos_trng_resume(struct device *dev)
{
int ret;
ret = pm_runtime_get_sync(dev);
if (ret < 0) {
dev_err(dev, "Could not get runtime PM.\n");
pm_runtime_put_noidle(dev);
return ret;
}
return 0;
}
static SIMPLE_DEV_PM_OPS(exynos_trng_pm_ops, exynos_trng_suspend,
exynos_trng_resume);
static const struct of_device_id exynos_trng_dt_match[] = {
{
.compatible = "samsung,exynos5250-trng",
},
{ },
};
MODULE_DEVICE_TABLE(of, exynos_trng_dt_match);
static struct platform_driver exynos_trng_driver = {
.driver = {
.name = "exynos-trng",
.pm = &exynos_trng_pm_ops,
.of_match_table = exynos_trng_dt_match,
},
.probe = exynos_trng_probe,
.remove = exynos_trng_remove,
};
module_platform_driver(exynos_trng_driver);
MODULE_AUTHOR("Łukasz Stelmach");
MODULE_DESCRIPTION("H/W TRNG driver for Exynos chips");
MODULE_LICENSE("GPL v2");

13
drivers/char/hw_random/imx-rngc.c
查看文件

@@ -282,8 +282,7 @@ static int __exit imx_rngc_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM
static int imx_rngc_suspend(struct device *dev)
static int __maybe_unused imx_rngc_suspend(struct device *dev)
{
struct imx_rngc *rngc = dev_get_drvdata(dev);
@@ -292,7 +291,7 @@ static int imx_rngc_suspend(struct device *dev)
return 0;
}
static int imx_rngc_resume(struct device *dev)
static int __maybe_unused imx_rngc_resume(struct device *dev)
{
struct imx_rngc *rngc = dev_get_drvdata(dev);
@@ -301,11 +300,7 @@ static int imx_rngc_resume(struct device *dev)
return 0;
}
static const struct dev_pm_ops imx_rngc_pm_ops = {
.suspend = imx_rngc_suspend,
.resume = imx_rngc_resume,
};
#endif
SIMPLE_DEV_PM_OPS(imx_rngc_pm_ops, imx_rngc_suspend, imx_rngc_resume);
static const struct of_device_id imx_rngc_dt_ids[] = {
{ .compatible = "fsl,imx25-rngb", .data = NULL, },
@@ -316,9 +311,7 @@ MODULE_DEVICE_TABLE(of, imx_rngc_dt_ids);
static struct platform_driver imx_rngc_driver = {
.driver = {
.name = "imx_rngc",
#ifdef CONFIG_PM
.pm = &imx_rngc_pm_ops,
#endif
.of_match_table = imx_rngc_dt_ids,
},
.remove = __exit_p(imx_rngc_remove),

1
drivers/char/hw_random/mtk-rng.c
查看文件

@@ -135,6 +135,7 @@ static int mtk_rng_probe(struct platform_device *pdev)
#endif
priv->rng.read = mtk_rng_read;
priv->rng.priv = (unsigned long)&pdev->dev;
priv->rng.quality = 900;
priv->clk = devm_clk_get(&pdev->dev, "rng");
if (IS_ERR(priv->clk)) {