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Merge 'v5.11-rc6' into android-mainline

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Linux 5.11-rc6

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I71e0a7924b31e3de90d189a0012b29923b573dc4
This commit is contained in:
Greg Kroah-Hartman
2021-02-01 10:23:36 +01:00
parent 7c0551d428 1048ba83fb
commit 9ecdd51ae3
24 changed files with 709 additions and 125 deletions
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5
Documentation/asm-annotations.rst
View File

@@ -100,6 +100,11 @@ Instruction Macros
~~~~~~~~~~~~~~~~~~
This section covers ``SYM_FUNC_*`` and ``SYM_CODE_*`` enumerated above.
``objtool`` requires that all code must be contained in an ELF symbol. Symbol
names that have a ``.L`` prefix do not emit symbol table entries. ``.L``
prefixed symbols can be used within a code region, but should be avoided for
denoting a range of code via ``SYM_*_START/END`` annotations.
* ``SYM_FUNC_START`` and ``SYM_FUNC_START_LOCAL`` are supposed to be **the
most frequent markings**. They are used for functions with standard calling
conventions -- global and local. Like in C, they both align the functions to

111
Documentation/devicetree/bindings/leds/richtek,rt8515.yaml Normal file
View File

@@ -0,0 +1,111 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/richtek,rt8515.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Richtek RT8515 1.5A dual channel LED driver
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description: |
The Richtek RT8515 is a dual channel (two mode) LED driver that
supports driving a white LED in flash or torch mode. The maximum
current for each mode is defined in hardware using two resistors
RFS and RTS.
properties:
compatible:
const: richtek,rt8515
enf-gpios:
maxItems: 1
description: A connection to the 'ENF' (enable flash) pin.
ent-gpios:
maxItems: 1
description: A connection to the 'ENT' (enable torch) pin.
richtek,rfs-ohms:
minimum: 7680
maximum: 367000
description: The resistance value of the RFS resistor. This
resistors limits the maximum flash current. This must be set
for the property flash-max-microamp to work, the RFS resistor
defines the range of the dimmer setting (brightness) of the
flash LED.
richtek,rts-ohms:
minimum: 7680
maximum: 367000
description: The resistance value of the RTS resistor. This
resistors limits the maximum torch current. This must be set
for the property torch-max-microamp to work, the RTS resistor
defines the range of the dimmer setting (brightness) of the
torch LED.
led:
type: object
$ref: common.yaml#
properties:
function: true
color: true
flash-max-timeout-us: true
flash-max-microamp:
maximum: 700000
description: The maximum current for flash mode
is hardwired to the component using the RFS resistor to
ground. The maximum hardware current setting is calculated
according to the formula Imax = 5500 / RFS. The lowest
allowed resistance value is 7.86 kOhm giving an absolute
maximum current of 700mA. By setting this attribute in
the device tree, you can further restrict the maximum
current below the hardware limit. This requires the RFS
to be defined as it defines the maximum range.
led-max-microamp:
maximum: 700000
description: The maximum current for torch mode
is hardwired to the component using the RTS resistor to
ground. The maximum hardware current setting is calculated
according to the formula Imax = 5500 / RTS. The lowest
allowed resistance value is 7.86 kOhm giving an absolute
maximum current of 700mA. By setting this attribute in
the device tree, you can further restrict the maximum
current below the hardware limit. This requires the RTS
to be defined as it defines the maximum range.
additionalProperties: false
required:
- compatible
- ent-gpios
- enf-gpios
- led
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/leds/common.h>
led-controller {
compatible = "richtek,rt8515";
enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
richtek,rfs-ohms = <16000>;
richtek,rts-ohms = <100000>;
led {
function = LED_FUNCTION_FLASH;
color = <LED_COLOR_ID_WHITE>;
flash-max-timeout-us = <250000>;
flash-max-microamp = <150000>;
led-max-microamp = <25000>;
};
};
...

2
Makefile
View File

@@ -2,7 +2,7 @@
VERSION = 5
PATCHLEVEL = 11
SUBLEVEL = 0
EXTRAVERSION = -rc5
EXTRAVERSION = -rc6
NAME = Kleptomaniac Octopus
# *DOCUMENTATION*

30
arch/powerpc/kernel/irq.c
View File

@@ -180,14 +180,19 @@ void notrace restore_interrupts(void)
void replay_soft_interrupts(void)
{
/*
* We use local_paca rather than get_paca() to avoid all
* the debug_smp_processor_id() business in this low level
* function
*/
unsigned char happened = local_paca->irq_happened;
struct pt_regs regs;
/*
* Be careful here, calling these interrupt handlers can cause
* softirqs to be raised, which they may run when calling irq_exit,
* which will cause local_irq_enable() to be run, which can then
* recurse into this function. Don't keep any state across
* interrupt handler calls which may change underneath us.
*
* We use local_paca rather than get_paca() to avoid all the
* debug_smp_processor_id() business in this low level function.
*/
ppc_save_regs(&regs);
regs.softe = IRQS_ENABLED;
@@ -209,7 +214,7 @@ again:
* This is a higher priority interrupt than the others, so
* replay it first.
*/
if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (happened & PACA_IRQ_HMI)) {
if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (local_paca->irq_happened & PACA_IRQ_HMI)) {
local_paca->irq_happened &= ~PACA_IRQ_HMI;
regs.trap = 0xe60;
handle_hmi_exception(&regs);
@@ -217,7 +222,7 @@ again:
hard_irq_disable();
}
if (happened & PACA_IRQ_DEC) {
if (local_paca->irq_happened & PACA_IRQ_DEC) {
local_paca->irq_happened &= ~PACA_IRQ_DEC;
regs.trap = 0x900;
timer_interrupt(&regs);
@@ -225,7 +230,7 @@ again:
hard_irq_disable();
}
if (happened & PACA_IRQ_EE) {
if (local_paca->irq_happened & PACA_IRQ_EE) {
local_paca->irq_happened &= ~PACA_IRQ_EE;
regs.trap = 0x500;
do_IRQ(&regs);
@@ -233,7 +238,7 @@ again:
hard_irq_disable();
}
if (IS_ENABLED(CONFIG_PPC_DOORBELL) && (happened & PACA_IRQ_DBELL)) {
if (IS_ENABLED(CONFIG_PPC_DOORBELL) && (local_paca->irq_happened & PACA_IRQ_DBELL)) {
local_paca->irq_happened &= ~PACA_IRQ_DBELL;
if (IS_ENABLED(CONFIG_PPC_BOOK3E))
regs.trap = 0x280;
@@ -245,7 +250,7 @@ again:
}
/* Book3E does not support soft-masking PMI interrupts */
if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (happened & PACA_IRQ_PMI)) {
if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (local_paca->irq_happened & PACA_IRQ_PMI)) {
local_paca->irq_happened &= ~PACA_IRQ_PMI;
regs.trap = 0xf00;
performance_monitor_exception(&regs);
@@ -253,8 +258,7 @@ again:
hard_irq_disable();
}
happened = local_paca->irq_happened;
if (happened & ~PACA_IRQ_HARD_DIS) {
if (local_paca->irq_happened & ~PACA_IRQ_HARD_DIS) {
/*
* We are responding to the next interrupt, so interrupt-off
* latencies should be reset here.

15
arch/x86/entry/thunk_64.S
View File

@@ -10,7 +10,7 @@
#include <asm/export.h>
/* rdi: arg1 ... normal C conventions. rax is saved/restored. */
.macro THUNK name, func, put_ret_addr_in_rdi=0
.macro THUNK name, func
SYM_FUNC_START_NOALIGN(\name)
pushq %rbp
movq %rsp, %rbp
@@ -25,13 +25,8 @@ SYM_FUNC_START_NOALIGN(\name)
pushq %r10
pushq %r11
.if \put_ret_addr_in_rdi
/* 8(%rbp) is return addr on stack */
movq 8(%rbp), %rdi
.endif
call \func
jmp .L_restore
jmp __thunk_restore
SYM_FUNC_END(\name)
_ASM_NOKPROBE(\name)
.endm
@@ -44,7 +39,7 @@ SYM_FUNC_END(\name)
#endif
#ifdef CONFIG_PREEMPTION
SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
SYM_CODE_START_LOCAL_NOALIGN(__thunk_restore)
popq %r11
popq %r10
popq %r9
@@ -56,6 +51,6 @@ SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
popq %rdi
popq %rbp
ret
_ASM_NOKPROBE(.L_restore)
SYM_CODE_END(.L_restore)
_ASM_NOKPROBE(__thunk_restore)
SYM_CODE_END(__thunk_restore)
#endif

13
drivers/firmware/efi/apple-properties.c
View File

@@ -3,8 +3,9 @@
* apple-properties.c - EFI device properties on Macs
* Copyright (C) 2016 Lukas Wunner <lukas@wunner.de>
*
* Note, all properties are considered as u8 arrays.
* To get a value of any of them the caller must use device_property_read_u8_array().
* Properties are stored either as:
* u8 arrays which can be retrieved with device_property_read_u8_array() or
* booleans which can be queried with device_property_present().
*/
#define pr_fmt(fmt) "apple-properties: " fmt
@@ -88,8 +89,12 @@ static void __init unmarshal_key_value_pairs(struct dev_header *dev_header,
entry_data = ptr + key_len + sizeof(val_len);
entry_len = val_len - sizeof(val_len);
entry[i] = PROPERTY_ENTRY_U8_ARRAY_LEN(key, entry_data,
entry_len);
if (entry_len)
entry[i] = PROPERTY_ENTRY_U8_ARRAY_LEN(key, entry_data,
entry_len);
else
entry[i] = PROPERTY_ENTRY_BOOL(key);
if (dump_properties) {
dev_info(dev, "property: %s\n", key);
print_hex_dump(KERN_INFO, pr_fmt(), DUMP_PREFIX_OFFSET,

19
drivers/i2c/busses/i2c-mt65xx.c
View File

@@ -1275,7 +1275,8 @@ static int mtk_i2c_probe(struct platform_device *pdev)
mtk_i2c_clock_disable(i2c);
ret = devm_request_irq(&pdev->dev, irq, mtk_i2c_irq,
IRQF_TRIGGER_NONE, I2C_DRV_NAME, i2c);
IRQF_NO_SUSPEND | IRQF_TRIGGER_NONE,
I2C_DRV_NAME, i2c);
if (ret < 0) {
dev_err(&pdev->dev,
"Request I2C IRQ %d fail\n", irq);
@@ -1302,7 +1303,16 @@ static int mtk_i2c_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM_SLEEP
static int mtk_i2c_resume(struct device *dev)
static int mtk_i2c_suspend_noirq(struct device *dev)
{
struct mtk_i2c *i2c = dev_get_drvdata(dev);
i2c_mark_adapter_suspended(&i2c->adap);
return 0;
}
static int mtk_i2c_resume_noirq(struct device *dev)
{
int ret;
struct mtk_i2c *i2c = dev_get_drvdata(dev);
@@ -1317,12 +1327,15 @@ static int mtk_i2c_resume(struct device *dev)
mtk_i2c_clock_disable(i2c);
i2c_mark_adapter_resumed(&i2c->adap);
return 0;
}
#endif
static const struct dev_pm_ops mtk_i2c_pm = {
SET_SYSTEM_SLEEP_PM_OPS(NULL, mtk_i2c_resume)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mtk_i2c_suspend_noirq,
mtk_i2c_resume_noirq)
};
static struct platform_driver mtk_i2c_driver = {

3
drivers/leds/Kconfig
View File

@@ -928,6 +928,9 @@ config LEDS_ACER_A500
This option enables support for the Power Button LED of
Acer Iconia Tab A500.
comment "Flash and Torch LED drivers"
source "drivers/leds/flash/Kconfig"
comment "LED Triggers"
source "drivers/leds/trigger/Kconfig"

3
drivers/leds/Makefile
View File

@@ -103,5 +103,8 @@ obj-$(CONFIG_LEDS_SPI_BYTE) += leds-spi-byte.o
# LED Userspace Drivers
obj-$(CONFIG_LEDS_USER) += uleds.o
# Flash and Torch LED Drivers
obj-$(CONFIG_LEDS_CLASS_FLASH) += flash/
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGERS) += trigger/

15
drivers/leds/flash/Kconfig Normal file
View File

@@ -0,0 +1,15 @@
# SPDX-License-Identifier: GPL-2.0
if LEDS_CLASS_FLASH
config LEDS_RT8515
tristate "LED support for Richtek RT8515 flash/torch LED"
depends on GPIOLIB
help
This option enables support for the Richtek RT8515 flash
and torch LEDs found on some mobile phones.
To compile this driver as a module, choose M here: the module
will be called leds-rt8515.
endif # LEDS_CLASS_FLASH

3
drivers/leds/flash/Makefile Normal file
View File

@@ -0,0 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_LEDS_RT8515) += leds-rt8515.o

397
drivers/leds/flash/leds-rt8515.c Normal file
View File

@@ -0,0 +1,397 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* LED driver for Richtek RT8515 flash/torch white LEDs
* found on some Samsung mobile phones.
*
* This is a 1.5A Boost dual channel driver produced around 2011.
*
* The component lacks a datasheet, but in the schematic picture
* from the LG P970 service manual you can see the connections
* from the RT8515 to the LED, with two resistors connected
* from the pins "RFS" and "RTS" to ground.
*
* On the LG P970:
* RFS (resistance flash setting?) is 20 kOhm
* RTS (resistance torch setting?) is 39 kOhm
*
* Some sleuthing finds us the RT9387A which we have a datasheet for:
* https://static5.arrow.com/pdfs/2014/7/27/8/21/12/794/rtt_/manual/94download_ds.jspprt9387a.jspprt9387a.pdf
* This apparently works the same way so in theory this driver
* should cover RT9387A as well. This has not been tested, please
* update the compatibles if you add RT9387A support.
*
* Linus Walleij <linus.walleij@linaro.org>
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/led-class-flash.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <media/v4l2-flash-led-class.h>
/* We can provide 15-700 mA out to the LED */
#define RT8515_MIN_IOUT_MA 15
#define RT8515_MAX_IOUT_MA 700
/* The maximum intensity is 1-16 for flash and 1-100 for torch */
#define RT8515_FLASH_MAX 16
#define RT8515_TORCH_MAX 100
#define RT8515_TIMEOUT_US 250000U
#define RT8515_MAX_TIMEOUT_US 300000U
struct rt8515 {
struct led_classdev_flash fled;
struct device *dev;
struct v4l2_flash *v4l2_flash;
struct mutex lock;
struct regulator *reg;
struct gpio_desc *enable_torch;
struct gpio_desc *enable_flash;
struct timer_list powerdown_timer;
u32 max_timeout; /* Flash max timeout */
int flash_max_intensity;
int torch_max_intensity;
};
static struct rt8515 *to_rt8515(struct led_classdev_flash *fled)
{
return container_of(fled, struct rt8515, fled);
}
static void rt8515_gpio_led_off(struct rt8515 *rt)
{
gpiod_set_value(rt->enable_flash, 0);
gpiod_set_value(rt->enable_torch, 0);
}
static void rt8515_gpio_brightness_commit(struct gpio_desc *gpiod,
int brightness)
{
int i;
/*
* Toggling a GPIO line with a small delay increases the
* brightness one step at a time.
*/
for (i = 0; i < brightness; i++) {
gpiod_set_value(gpiod, 0);
udelay(1);
gpiod_set_value(gpiod, 1);
udelay(1);
}
}
/* This is setting the torch light level */
static int rt8515_led_brightness_set(struct led_classdev *led,
enum led_brightness brightness)
{
struct led_classdev_flash *fled = lcdev_to_flcdev(led);
struct rt8515 *rt = to_rt8515(fled);
mutex_lock(&rt->lock);
if (brightness == LED_OFF) {
/* Off */
rt8515_gpio_led_off(rt);
} else if (brightness < RT8515_TORCH_MAX) {
/* Step it up to movie mode brightness using the flash pin */
rt8515_gpio_brightness_commit(rt->enable_torch, brightness);
} else {
/* Max torch brightness requested */
gpiod_set_value(rt->enable_torch, 1);
}
mutex_unlock(&rt->lock);
return 0;
}
static int rt8515_led_flash_strobe_set(struct led_classdev_flash *fled,
bool state)
{
struct rt8515 *rt = to_rt8515(fled);
struct led_flash_setting *timeout = &fled->timeout;
int brightness = rt->flash_max_intensity;
mutex_lock(&rt->lock);
if (state) {
/* Enable LED flash mode and set brightness */
rt8515_gpio_brightness_commit(rt->enable_flash, brightness);
/* Set timeout */
mod_timer(&rt->powerdown_timer,
jiffies + usecs_to_jiffies(timeout->val));
} else {
del_timer_sync(&rt->powerdown_timer);
/* Turn the LED off */
rt8515_gpio_led_off(rt);
}
fled->led_cdev.brightness = LED_OFF;
/* After this the torch LED will be disabled */
mutex_unlock(&rt->lock);
return 0;
}
static int rt8515_led_flash_strobe_get(struct led_classdev_flash *fled,
bool *state)
{
struct rt8515 *rt = to_rt8515(fled);
*state = timer_pending(&rt->powerdown_timer);
return 0;
}
static int rt8515_led_flash_timeout_set(struct led_classdev_flash *fled,
u32 timeout)
{
/* The timeout is stored in the led-class-flash core */
return 0;
}
static const struct led_flash_ops rt8515_flash_ops = {
.strobe_set = rt8515_led_flash_strobe_set,
.strobe_get = rt8515_led_flash_strobe_get,
.timeout_set = rt8515_led_flash_timeout_set,
};
static void rt8515_powerdown_timer(struct timer_list *t)
{
struct rt8515 *rt = from_timer(rt, t, powerdown_timer);
/* Turn the LED off */
rt8515_gpio_led_off(rt);
}
static void rt8515_init_flash_timeout(struct rt8515 *rt)
{
struct led_classdev_flash *fled = &rt->fled;
struct led_flash_setting *s;
/* Init flash timeout setting */
s = &fled->timeout;
s->min = 1;
s->max = rt->max_timeout;
s->step = 1;
/*
* Set default timeout to RT8515_TIMEOUT_US except if
* max_timeout from DT is lower.
*/
s->val = min(rt->max_timeout, RT8515_TIMEOUT_US);
}
#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
/* Configure the V2L2 flash subdevice */
static void rt8515_init_v4l2_flash_config(struct rt8515 *rt,
struct v4l2_flash_config *v4l2_sd_cfg)
{
struct led_classdev *led = &rt->fled.led_cdev;
struct led_flash_setting *s;
strscpy(v4l2_sd_cfg->dev_name, led->dev->kobj.name,
sizeof(v4l2_sd_cfg->dev_name));
/*
* Init flash intensity setting: this is a linear scale
* capped from the device tree max intensity setting
* 1..flash_max_intensity
*/
s = &v4l2_sd_cfg->intensity;
s->min = 1;
s->max = rt->flash_max_intensity;
s->step = 1;
s->val = s->max;
}
static void rt8515_v4l2_flash_release(struct rt8515 *rt)
{
v4l2_flash_release(rt->v4l2_flash);
}
#else
static void rt8515_init_v4l2_flash_config(struct rt8515 *rt,
struct v4l2_flash_config *v4l2_sd_cfg)
{
}
static void rt8515_v4l2_flash_release(struct rt8515 *rt)
{
}
#endif
static void rt8515_determine_max_intensity(struct rt8515 *rt,
struct fwnode_handle *led,
const char *resistance,
const char *max_ua_prop, int hw_max,
int *max_intensity_setting)
{
u32 res = 0; /* Can't be 0 so 0 is undefined */
u32 ua;
u32 max_ma;
int max_intensity;
int ret;
fwnode_property_read_u32(rt->dev->fwnode, resistance, &res);
ret = fwnode_property_read_u32(led, max_ua_prop, &ua);
/* Missing info in DT, OK go with hardware maxima */
if (ret || res == 0) {
dev_err(rt->dev,
"either %s or %s missing from DT, using HW max\n",
resistance, max_ua_prop);
max_ma = RT8515_MAX_IOUT_MA;
max_intensity = hw_max;
goto out_assign_max;
}
/*
* Formula from the datasheet, this is the maximum current
* defined by the hardware.
*/
max_ma = (5500 * 1000) / res;
/*
* Calculate max intensity (linear scaling)
* Formula is ((ua / 1000) / max_ma) * 100, then simplified
*/
max_intensity = (ua / 10) / max_ma;
dev_info(rt->dev,
"current restricted from %u to %u mA, max intensity %d/100\n",
max_ma, (ua / 1000), max_intensity);
out_assign_max:
dev_info(rt->dev, "max intensity %d/%d = %d mA\n",
max_intensity, hw_max, max_ma);
*max_intensity_setting = max_intensity;
}
static int rt8515_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct fwnode_handle *child;
struct rt8515 *rt;
struct led_classdev *led;
struct led_classdev_flash *fled;
struct led_init_data init_data = {};
struct v4l2_flash_config v4l2_sd_cfg = {};
int ret;
rt = devm_kzalloc(dev, sizeof(*rt), GFP_KERNEL);
if (!rt)
return -ENOMEM;
rt->dev = dev;
fled = &rt->fled;
led = &fled->led_cdev;
/* ENF - Enable Flash line */
rt->enable_flash = devm_gpiod_get(dev, "enf", GPIOD_OUT_LOW);
if (IS_ERR(rt->enable_flash))
return dev_err_probe(dev, PTR_ERR(rt->enable_flash),
"cannot get ENF (enable flash) GPIO\n");
/* ENT - Enable Torch line */
rt->enable_torch = devm_gpiod_get(dev, "ent", GPIOD_OUT_LOW);
if (IS_ERR(rt->enable_torch))
return dev_err_probe(dev, PTR_ERR(rt->enable_torch),
"cannot get ENT (enable torch) GPIO\n");
child = fwnode_get_next_available_child_node(dev->fwnode, NULL);
if (!child) {
dev_err(dev,
"No fwnode child node found for connected LED.\n");
return -EINVAL;
}
init_data.fwnode = child;
rt8515_determine_max_intensity(rt, child, "richtek,rfs-ohms",
"flash-max-microamp",
RT8515_FLASH_MAX,
&rt->flash_max_intensity);
rt8515_determine_max_intensity(rt, child, "richtek,rts-ohms",
"led-max-microamp",
RT8515_TORCH_MAX,
&rt->torch_max_intensity);
ret = fwnode_property_read_u32(child, "flash-max-timeout-us",
&rt->max_timeout);
if (ret) {
rt->max_timeout = RT8515_MAX_TIMEOUT_US;
dev_warn(dev,
"flash-max-timeout-us property missing\n");
}
timer_setup(&rt->powerdown_timer, rt8515_powerdown_timer, 0);
rt8515_init_flash_timeout(rt);
fled->ops = &rt8515_flash_ops;
led->max_brightness = rt->torch_max_intensity;
led->brightness_set_blocking = rt8515_led_brightness_set;
led->flags |= LED_CORE_SUSPENDRESUME | LED_DEV_CAP_FLASH;
mutex_init(&rt->lock);
platform_set_drvdata(pdev, rt);
ret = devm_led_classdev_flash_register_ext(dev, fled, &init_data);
if (ret) {
dev_err(dev, "can't register LED %s\n", led->name);
mutex_destroy(&rt->lock);
return ret;
}
rt8515_init_v4l2_flash_config(rt, &v4l2_sd_cfg);
/* Create a V4L2 Flash device if V4L2 flash is enabled */
rt->v4l2_flash = v4l2_flash_init(dev, child, fled, NULL, &v4l2_sd_cfg);
if (IS_ERR(rt->v4l2_flash)) {
ret = PTR_ERR(rt->v4l2_flash);
dev_err(dev, "failed to register V4L2 flash device (%d)\n",
ret);
/*
* Continue without the V4L2 flash
* (we still have the classdev)
*/
}
return 0;
}
static int rt8515_remove(struct platform_device *pdev)
{
struct rt8515 *rt = platform_get_drvdata(pdev);
rt8515_v4l2_flash_release(rt);
del_timer_sync(&rt->powerdown_timer);
mutex_destroy(&rt->lock);
return 0;
}
static const struct of_device_id rt8515_match[] = {
{ .compatible = "richtek,rt8515", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, rt8515_match);
static struct platform_driver rt8515_driver = {
.driver = {
.name = "rt8515",
.of_match_table = rt8515_match,
},
.probe = rt8515_probe,
.remove = rt8515_remove,
};
module_platform_driver(rt8515_driver);
MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
MODULE_DESCRIPTION("Richtek RT8515 LED driver");
MODULE_LICENSE("GPL");

10
drivers/leds/led-triggers.c
View File

@@ -378,14 +378,15 @@ void led_trigger_event(struct led_trigger *trig,
enum led_brightness brightness)
{
struct led_classdev *led_cdev;
unsigned long flags;
if (!trig)
return;
read_lock(&trig->leddev_list_lock);
read_lock_irqsave(&trig->leddev_list_lock, flags);
list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list)
led_set_brightness(led_cdev, brightness);
read_unlock(&trig->leddev_list_lock);
read_unlock_irqrestore(&trig->leddev_list_lock, flags);
}
EXPORT_SYMBOL_GPL(led_trigger_event);
@@ -396,11 +397,12 @@ static void led_trigger_blink_setup(struct led_trigger *trig,
int invert)
{
struct led_classdev *led_cdev;
unsigned long flags;
if (!trig)
return;
read_lock(&trig->leddev_list_lock);
read_lock_irqsave(&trig->leddev_list_lock, flags);
list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list) {
if (oneshot)
led_blink_set_oneshot(led_cdev, delay_on, delay_off,
@@ -408,7 +410,7 @@ static void led_trigger_blink_setup(struct led_trigger *trig,
else
led_blink_set(led_cdev, delay_on, delay_off);
}
read_unlock(&trig->leddev_list_lock);
read_unlock_irqrestore(&trig->leddev_list_lock, flags);
}
void led_trigger_blink(struct led_trigger *trig,

6
drivers/leds/leds-ariel.c
View File

@@ -96,14 +96,14 @@ static int ariel_led_probe(struct platform_device *pdev)
return -ENOMEM;
leds[0].ec_index = EC_BLUE_LED;
leds[0].led_cdev.name = "blue:power",
leds[0].led_cdev.name = "blue:power";
leds[0].led_cdev.default_trigger = "default-on";
leds[1].ec_index = EC_AMBER_LED;
leds[1].led_cdev.name = "amber:status",
leds[1].led_cdev.name = "amber:status";
leds[2].ec_index = EC_GREEN_LED;
leds[2].led_cdev.name = "green:status",
leds[2].led_cdev.name = "green:status";
leds[2].led_cdev.default_trigger = "default-on";
for (i = 0; i < NLEDS; i++) {

2
drivers/leds/leds-lm3533.c
View File

@@ -679,7 +679,7 @@ static int lm3533_led_probe(struct platform_device *pdev)
led->cdev.brightness_get = lm3533_led_get;
led->cdev.blink_set = lm3533_led_blink_set;
led->cdev.brightness = LED_OFF;
led->cdev.groups = lm3533_led_attribute_groups,
led->cdev.groups = lm3533_led_attribute_groups;
led->id = pdev->id;
mutex_init(&led->mutex);

8
drivers/rtc/rtc-cmos.c
View File

@@ -805,6 +805,14 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
spin_lock_irq(&rtc_lock);
/* Ensure that the RTC is accessible. Bit 0-6 must be 0! */
if ((CMOS_READ(RTC_VALID) & 0x7f) != 0) {
spin_unlock_irq(&rtc_lock);
dev_warn(dev, "not accessible\n");
retval = -ENXIO;
goto cleanup1;
}
if (!(flags & CMOS_RTC_FLAGS_NOFREQ)) {
/* force periodic irq to CMOS reset default of 1024Hz;
*

7
drivers/rtc/rtc-mc146818-lib.c
View File

@@ -21,6 +21,13 @@ unsigned int mc146818_get_time(struct rtc_time *time)
again:
spin_lock_irqsave(&rtc_lock, flags);
/* Ensure that the RTC is accessible. Bit 0-6 must be 0! */
if (WARN_ON_ONCE((CMOS_READ(RTC_VALID) & 0x7f) != 0)) {
spin_unlock_irqrestore(&rtc_lock, flags);
memset(time, 0xff, sizeof(*time));
return 0;
}
/*
* Check whether there is an update in progress during which the
* readout is unspecified. The maximum update time is ~2ms. Poll

69
fs/nfs/pnfs.c
View File

@@ -324,6 +324,21 @@ pnfs_grab_inode_layout_hdr(struct pnfs_layout_hdr *lo)
return NULL;
}
/*
* Compare 2 layout stateid sequence ids, to see which is newer,
* taking into account wraparound issues.
*/
static bool pnfs_seqid_is_newer(u32 s1, u32 s2)
{
return (s32)(s1 - s2) > 0;
}
static void pnfs_barrier_update(struct pnfs_layout_hdr *lo, u32 newseq)
{
if (pnfs_seqid_is_newer(newseq, lo->plh_barrier))
lo->plh_barrier = newseq;
}
static void
pnfs_set_plh_return_info(struct pnfs_layout_hdr *lo, enum pnfs_iomode iomode,
u32 seq)
@@ -335,6 +350,7 @@ pnfs_set_plh_return_info(struct pnfs_layout_hdr *lo, enum pnfs_iomode iomode,
if (seq != 0) {
WARN_ON_ONCE(lo->plh_return_seq != 0 && lo->plh_return_seq != seq);
lo->plh_return_seq = seq;
pnfs_barrier_update(lo, seq);
}
}
@@ -639,15 +655,6 @@ static int mark_lseg_invalid(struct pnfs_layout_segment *lseg,
return rv;
}
/*
* Compare 2 layout stateid sequence ids, to see which is newer,
* taking into account wraparound issues.
*/
static bool pnfs_seqid_is_newer(u32 s1, u32 s2)
{
return (s32)(s1 - s2) > 0;
}
static bool
pnfs_should_free_range(const struct pnfs_layout_range *lseg_range,
const struct pnfs_layout_range *recall_range)
@@ -984,8 +991,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
new_barrier = be32_to_cpu(new->seqid);
else if (new_barrier == 0)
return;
if (pnfs_seqid_is_newer(new_barrier, lo->plh_barrier))
lo->plh_barrier = new_barrier;
pnfs_barrier_update(lo, new_barrier);
}
static bool
@@ -994,7 +1000,7 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo,
{
u32 seqid = be32_to_cpu(stateid->seqid);
return !pnfs_seqid_is_newer(seqid, lo->plh_barrier);
return !pnfs_seqid_is_newer(seqid, lo->plh_barrier) && lo->plh_barrier;
}
/* lget is set to 1 if called from inside send_layoutget call chain */
@@ -1183,20 +1189,17 @@ pnfs_prepare_layoutreturn(struct pnfs_layout_hdr *lo,
return false;
set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags);
pnfs_get_layout_hdr(lo);
nfs4_stateid_copy(stateid, &lo->plh_stateid);
*cred = get_cred(lo->plh_lc_cred);
if (test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags)) {
nfs4_stateid_copy(stateid, &lo->plh_stateid);
*cred = get_cred(lo->plh_lc_cred);
if (lo->plh_return_seq != 0)
stateid->seqid = cpu_to_be32(lo->plh_return_seq);
if (iomode != NULL)
*iomode = lo->plh_return_iomode;
pnfs_clear_layoutreturn_info(lo);
return true;
}
nfs4_stateid_copy(stateid, &lo->plh_stateid);
*cred = get_cred(lo->plh_lc_cred);
if (iomode != NULL)
} else if (iomode != NULL)
*iomode = IOMODE_ANY;
pnfs_barrier_update(lo, be32_to_cpu(stateid->seqid));
return true;
}
@@ -1909,6 +1912,11 @@ static void nfs_layoutget_end(struct pnfs_layout_hdr *lo)
wake_up_var(&lo->plh_outstanding);
}
static bool pnfs_is_first_layoutget(struct pnfs_layout_hdr *lo)
{
return test_bit(NFS_LAYOUT_FIRST_LAYOUTGET, &lo->plh_flags);
}
static void pnfs_clear_first_layoutget(struct pnfs_layout_hdr *lo)
{
unsigned long *bitlock = &lo->plh_flags;
@@ -2383,23 +2391,34 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
goto out_forget;
}
if (!pnfs_layout_is_valid(lo)) {
/* We have a completely new layout */
pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, true);
} else if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) {
if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) {
/* existing state ID, make sure the sequence number matches. */
if (pnfs_layout_stateid_blocked(lo, &res->stateid)) {
if (!pnfs_layout_is_valid(lo) &&
pnfs_is_first_layoutget(lo))
lo->plh_barrier = 0;
dprintk("%s forget reply due to sequence\n", __func__);
goto out_forget;
}
pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, false);
} else {
} else if (pnfs_layout_is_valid(lo)) {
/*
* We got an entirely new state ID. Mark all segments for the
* inode invalid, and retry the layoutget
*/
pnfs_mark_layout_stateid_invalid(lo, &free_me);
struct pnfs_layout_range range = {
.iomode = IOMODE_ANY,
.length = NFS4_MAX_UINT64,
};
pnfs_set_plh_return_info(lo, IOMODE_ANY, 0);
pnfs_mark_matching_lsegs_return(lo, &lo->plh_return_segs,
&range, 0);
goto out_forget;
} else {
/* We have a completely new layout */
if (!pnfs_is_first_layoutget(lo))
goto out_forget;
pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, true);
}
pnfs_get_lseg(lseg);

5
include/linux/linkage.h
View File

@@ -178,6 +178,11 @@
* Objtool generates debug info for both FUNC & CODE, but needs special
* annotations for each CODE's start (to describe the actual stack frame).
*
* Objtool requires that all code must be contained in an ELF symbol. Symbol
* names that have a .L prefix do not emit symbol table entries. .L
* prefixed symbols can be used within a code region, but should be avoided for
* denoting a range of code via ``SYM_*_START/END`` annotations.
*
* ALIAS -- does not generate debug info -- the aliased function will
*/

3
include/linux/sunrpc/xdr.h
View File

@@ -25,8 +25,7 @@ struct rpc_rqst;
#define XDR_QUADLEN(l) (((l) + 3) >> 2)
/*
* Generic opaque `network object.' At the kernel level, this type
* is used only by lockd.
* Generic opaque `network object.'
*/
#define XDR_MAX_NETOBJ 1024
struct xdr_netobj {

2
kernel/entry/common.c
View File

@@ -222,7 +222,7 @@ static inline bool report_single_step(unsigned long work)
*/
static inline bool report_single_step(unsigned long work)
{
if (!(work & SYSCALL_WORK_SYSCALL_EMU))
if (work & SYSCALL_WORK_SYSCALL_EMU)
return false;
return !!(current_thread_info()->flags & _TIF_SINGLESTEP);

30
net/sunrpc/auth_gss/auth_gss.c
View File

@@ -29,6 +29,7 @@
#include <linux/uaccess.h>
#include <linux/hashtable.h>
#include "auth_gss_internal.h"
#include "../netns.h"
#include <trace/events/rpcgss.h>
@@ -125,35 +126,6 @@ gss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx)
clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags);
}
static const void *
simple_get_bytes(const void *p, const void *end, void *res, size_t len)
{
const void *q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
memcpy(res, p, len);
return q;
}
static inline const void *
simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest)
{
const void *q;
unsigned int len;
p = simple_get_bytes(p, end, &len, sizeof(len));
if (IS_ERR(p))
return p;
q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
dest->data = kmemdup(p, len, GFP_NOFS);
if (unlikely(dest->data == NULL))
return ERR_PTR(-ENOMEM);
dest->len = len;
return q;
}
static struct gss_cl_ctx *
gss_cred_get_ctx(struct rpc_cred *cred)
{

45
net/sunrpc/auth_gss/auth_gss_internal.h Normal file
View File

@@ -0,0 +1,45 @@
// SPDX-License-Identifier: BSD-3-Clause
/*
* linux/net/sunrpc/auth_gss/auth_gss_internal.h
*
* Internal definitions for RPCSEC_GSS client authentication
*
* Copyright (c) 2000 The Regents of the University of Michigan.
* All rights reserved.
*
*/
#include <linux/err.h>
#include <linux/string.h>
#include <linux/sunrpc/xdr.h>
static inline const void *
simple_get_bytes(const void *p, const void *end, void *res, size_t len)
{
const void *q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
memcpy(res, p, len);
return q;
}
static inline const void *
simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest)
{
const void *q;
unsigned int len;
p = simple_get_bytes(p, end, &len, sizeof(len));
if (IS_ERR(p))
return p;
q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
if (len) {
dest->data = kmemdup(p, len, GFP_NOFS);
if (unlikely(dest->data == NULL))
return ERR_PTR(-ENOMEM);
} else
dest->data = NULL;
dest->len = len;
return q;
}

31
net/sunrpc/auth_gss/gss_krb5_mech.c
View File

@@ -21,6 +21,8 @@
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/gss_krb5_enctypes.h>
#include "auth_gss_internal.h"
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_AUTH
#endif
@@ -143,35 +145,6 @@ get_gss_krb5_enctype(int etype)
return NULL;
}
static const void *
simple_get_bytes(const void *p, const void *end, void *res, int len)
{
const void *q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
memcpy(res, p, len);
return q;
}
static const void *
simple_get_netobj(const void *p, const void *end, struct xdr_netobj *res)
{
const void *q;
unsigned int len;
p = simple_get_bytes(p, end, &len, sizeof(len));
if (IS_ERR(p))
return p;
q = (const void *)((const char *)p + len);
if (unlikely(q > end || q < p))
return ERR_PTR(-EFAULT);
res->data = kmemdup(p, len, GFP_NOFS);
if (unlikely(res->data == NULL))
return ERR_PTR(-ENOMEM);
res->len = len;
return q;
}
static inline const void *
get_key(const void *p, const void *end,
struct krb5_ctx *ctx, struct crypto_sync_skcipher **res)