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Merge tag 'v5.7-rc7' into devel

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Linux 5.7-rc7
This commit is contained in:
Linus Walleij
2020-05-27 16:15:52 +02:00
parent f8af9113b1 9cb1fd0efd
commit ce1d966a30
1633 changed files with 17399 additions and 9121 deletions
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34
drivers/gpio/gpiolib.c
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@@ -1163,8 +1163,19 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc,
struct gpioline_info *info)
{
struct gpio_chip *gc = desc->gdev->chip;
bool ok_for_pinctrl;
unsigned long flags;
/*
* This function takes a mutex so we must check this before taking
* the spinlock.
*
* FIXME: find a non-racy way to retrieve this information. Maybe a
* lock common to both frameworks?
*/
ok_for_pinctrl =
pinctrl_gpio_can_use_line(gc->base + info->line_offset);
spin_lock_irqsave(&gpio_lock, flags);
if (desc->name) {
@@ -1191,7 +1202,7 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc,
test_bit(FLAG_USED_AS_IRQ, &desc->flags) ||
test_bit(FLAG_EXPORT, &desc->flags) ||
test_bit(FLAG_SYSFS, &desc->flags) ||
!pinctrl_gpio_can_use_line(gc->base + info->line_offset))
!ok_for_pinctrl)
info->flags |= GPIOLINE_FLAG_KERNEL;
if (test_bit(FLAG_IS_OUT, &desc->flags))
info->flags |= GPIOLINE_FLAG_IS_OUT;
@@ -1232,6 +1243,7 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
void __user *ip = (void __user *)arg;
struct gpio_desc *desc;
__u32 offset;
int hwgpio;
/* We fail any subsequent ioctl():s when the chip is gone */
if (!gc)
@@ -1264,13 +1276,19 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (IS_ERR(desc))
return PTR_ERR(desc);
hwgpio = gpio_chip_hwgpio(desc);
if (cmd == GPIO_GET_LINEINFO_WATCH_IOCTL &&
test_bit(hwgpio, priv->watched_lines))
return -EBUSY;
gpio_desc_to_lineinfo(desc, &lineinfo);
if (copy_to_user(ip, &lineinfo, sizeof(lineinfo)))
return -EFAULT;
if (cmd == GPIO_GET_LINEINFO_WATCH_IOCTL)
set_bit(gpio_chip_hwgpio(desc), priv->watched_lines);
set_bit(hwgpio, priv->watched_lines);
return 0;
} else if (cmd == GPIO_GET_LINEHANDLE_IOCTL) {
@@ -1285,7 +1303,12 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (IS_ERR(desc))
return PTR_ERR(desc);
clear_bit(gpio_chip_hwgpio(desc), priv->watched_lines);
hwgpio = gpio_chip_hwgpio(desc);
if (!test_bit(hwgpio, priv->watched_lines))
return -EBUSY;
clear_bit(hwgpio, priv->watched_lines);
return 0;
}
return -EINVAL;
@@ -5304,8 +5327,9 @@ static int __init gpiolib_dev_init(void)
gpiolib_initialized = true;
gpiochip_setup_devs();
if (IS_ENABLED(CONFIG_OF_DYNAMIC))
WARN_ON(of_reconfig_notifier_register(&gpio_of_notifier));
#if IS_ENABLED(CONFIG_OF_DYNAMIC) && IS_ENABLED(CONFIG_OF_GPIO)
WARN_ON(of_reconfig_notifier_register(&gpio_of_notifier));
#endif /* CONFIG_OF_DYNAMIC && CONFIG_OF_GPIO */
return ret;
}