system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-11-05 18:23:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

Fix inconsistent spinlock of AMD GPIO driver which can be

Browse source 
recognized by static analysis tool smatch. Declare constant
Variables with Sparse's suggestion.

Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Ken Xue 2015-03-27 17:44:26 +08:00 committed by Linus Walleij
parent d480239ba4
commit 25a853d037
2 changed files with 15 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
drivers/pinctrl/pinctrl-amd.c
View file

@ -29,7 +29,6 @@
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/bitops.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
@ -119,8 +118,9 @@ static void amd_gpio_set_value(struct gpio_chip *gc, unsigned offset, int value)
static int amd_gpio_set_debounce(struct gpio_chip *gc, unsigned offset,
unsigned debounce)
{
u32 pin_reg;
u32 time;
u32 pin_reg;
int ret = 0;
unsigned long flags;
struct amd_gpio *gpio_dev = to_amd_gpio(gc);
@ -166,7 +166,7 @@ static int amd_gpio_set_debounce(struct gpio_chip *gc, unsigned offset,
pin_reg |= BIT(DB_TMR_LARGE_OFF);
} else {
pin_reg &= ~DB_CNTRl_MASK;
return -EINVAL;
ret = -EINVAL;
}
} else {
pin_reg &= ~BIT(DB_TMR_OUT_UNIT_OFF);
@ -177,7 +177,7 @@ static int amd_gpio_set_debounce(struct gpio_chip *gc, unsigned offset,
writel(pin_reg, gpio_dev->base + offset * 4);
spin_unlock_irqrestore(&gpio_dev->lock, flags);
return 0;
return ret;
}
#ifdef CONFIG_DEBUG_FS
@ -463,14 +463,12 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
default:
dev_err(&gpio_dev->pdev->dev, "Invalid type value\n");
ret = -EINVAL;
goto exit;
}
pin_reg |= CLR_INTR_STAT << INTERRUPT_STS_OFF;
writel(pin_reg, gpio_dev->base + (d->hwirq)*4);
spin_unlock_irqrestore(&gpio_dev->lock, flags);
exit:
return ret;
}
@ -635,8 +633,9 @@ static int amd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
unsigned long *configs, unsigned num_configs)
{
int i;
u32 pin_reg;
u32 arg;
int ret = 0;
u32 pin_reg;
unsigned long flags;
enum pin_config_param param;
struct amd_gpio *gpio_dev = pinctrl_dev_get_drvdata(pctldev);
@ -675,14 +674,14 @@ static int amd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
default:
dev_err(&gpio_dev->pdev->dev,
"Invalid config param %04x\n", param);
return -ENOTSUPP;
ret = -ENOTSUPP;
}
writel(pin_reg, gpio_dev->base + pin*4);
}
spin_unlock_irqrestore(&gpio_dev->lock, flags);
return 0;
return ret;
}
static int amd_pinconf_group_get(struct pinctrl_dev *pctldev,
@ -739,7 +738,7 @@ static struct pinctrl_desc amd_pinctrl_desc = {
static int amd_gpio_probe(struct platform_device *pdev)
{
int ret = 0;
u32 irq_base;
int irq_base;
struct resource *res;
struct amd_gpio *gpio_dev;

12
drivers/pinctrl/pinctrl-amd.h
View file

@ -217,13 +217,13 @@ static const struct pinctrl_pin_desc kerncz_pins[] = {
PINCTRL_PIN(177, "GPIO_177"),
};
const unsigned i2c0_pins[] = {145, 146};
const unsigned i2c1_pins[] = {147, 148};
const unsigned i2c2_pins[] = {113, 114};
const unsigned i2c3_pins[] = {19, 20};
static const unsigned i2c0_pins[] = {145, 146};
static const unsigned i2c1_pins[] = {147, 148};
static const unsigned i2c2_pins[] = {113, 114};
static const unsigned i2c3_pins[] = {19, 20};
const unsigned uart0_pins[] = {135, 136, 137, 138, 139};
const unsigned uart1_pins[] = {140, 141, 142, 143, 144};
static const unsigned uart0_pins[] = {135, 136, 137, 138, 139};
static const unsigned uart1_pins[] = {140, 141, 142, 143, 144};
static const struct amd_pingroup kerncz_groups[] = {
{