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GPIO fixes for the v5.3 kernel: 

- Fix not reporting open drain/source lines to userspace as "input"
 - Fix a minor build error found in randconfigs
 - Fix a chip select quirk on the Freescale SPI
 - Fix the irqchip initialization semantic order to reflect what
   it was using the old API
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Merge tag 'gpio-v5.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Here is a (hopefully last) set of GPIO fixes for the v5.3 kernel
  cycle. Two are pretty core:

   - Fix not reporting open drain/source lines to userspace as "input"

   - Fix a minor build error found in randconfigs

   - Fix a chip select quirk on the Freescale SPI

   - Fix the irqchip initialization semantic order to reflect what it
     was using the old API"

* tag 'gpio-v5.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: Fix irqchip initialization order
  gpio: of: fix Freescale SPI CS quirk handling
  gpio: Fix build error of function redefinition
  gpiolib: never report open-drain/source lines as 'input' to user-space
alistair/sunxi64-5.4-dsi
Linus Torvalds 2019-08-24 14:45:33 -07:00
parent 361469211f 48057ed184
commit 083f0f2cd4
3 changed files with 20 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpio/gpiolib-of.c
View File

@ -363,7 +363,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
/* Special handling for SPI GPIOs if used */
if (IS_ERR(desc))
desc = of_find_spi_gpio(dev, con_id, &of_flags);
if (IS_ERR(desc)) {
if (IS_ERR(desc) && PTR_ERR(desc) != -EPROBE_DEFER) {
/* This quirk looks up flags and all */
desc = of_find_spi_cs_gpio(dev, con_id, idx, flags);
if (!IS_ERR(desc))

36
drivers/gpio/gpiolib.c
View File

@ -1091,9 +1091,11 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
lineinfo.flags |= GPIOLINE_FLAG_ACTIVE_LOW;
if (test_bit(FLAG_OPEN_DRAIN, &desc->flags))
lineinfo.flags |= GPIOLINE_FLAG_OPEN_DRAIN;
lineinfo.flags |= (GPIOLINE_FLAG_OPEN_DRAIN |
GPIOLINE_FLAG_IS_OUT);
if (test_bit(FLAG_OPEN_SOURCE, &desc->flags))
lineinfo.flags |= GPIOLINE_FLAG_OPEN_SOURCE;
lineinfo.flags |= (GPIOLINE_FLAG_OPEN_SOURCE |
GPIOLINE_FLAG_IS_OUT);
if (copy_to_user(ip, &lineinfo, sizeof(lineinfo)))
return -EFAULT;
@ -1371,21 +1373,13 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,
if (status)
goto err_remove_from_list;
status = gpiochip_irqchip_init_valid_mask(chip);
status = gpiochip_alloc_valid_mask(chip);
if (status)
goto err_remove_from_list;
status = gpiochip_alloc_valid_mask(chip);
if (status)
goto err_remove_irqchip_mask;
status = gpiochip_add_irqchip(chip, lock_key, request_key);
if (status)
goto err_free_gpiochip_mask;
status = of_gpiochip_add(chip);
if (status)
goto err_remove_chip;
goto err_free_gpiochip_mask;
status = gpiochip_init_valid_mask(chip);
if (status)
@ -1411,6 +1405,14 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,
machine_gpiochip_add(chip);
status = gpiochip_irqchip_init_valid_mask(chip);
if (status)
goto err_remove_acpi_chip;
status = gpiochip_add_irqchip(chip, lock_key, request_key);
if (status)
goto err_remove_irqchip_mask;
/*
* By first adding the chardev, and then adding the device,
* we get a device node entry in sysfs under
@ -1422,21 +1424,21 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,
if (gpiolib_initialized) {
status = gpiochip_setup_dev(gdev);
if (status)
goto err_remove_acpi_chip;
goto err_remove_irqchip;
}
return 0;
err_remove_irqchip:
gpiochip_irqchip_remove(chip);
err_remove_irqchip_mask:
gpiochip_irqchip_free_valid_mask(chip);
err_remove_acpi_chip:
acpi_gpiochip_remove(chip);
err_remove_of_chip:
gpiochip_free_hogs(chip);
of_gpiochip_remove(chip);
err_remove_chip:
gpiochip_irqchip_remove(chip);
err_free_gpiochip_mask:
gpiochip_free_valid_mask(chip);
err_remove_irqchip_mask:
gpiochip_irqchip_free_valid_mask(chip);
err_remove_from_list:
spin_lock_irqsave(&gpio_lock, flags);
list_del(&gdev->list);

24
include/linux/gpio.h
View File

@ -241,30 +241,6 @@ static inline int irq_to_gpio(unsigned irq)
return -EINVAL;
}
static inline int
gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
unsigned int gpio_offset, unsigned int pin_offset,
unsigned int npins)
{
WARN_ON(1);
return -EINVAL;
}
static inline int
gpiochip_add_pingroup_range(struct gpio_chip *chip,
struct pinctrl_dev *pctldev,
unsigned int gpio_offset, const char *pin_group)
{
WARN_ON(1);
return -EINVAL;
}
static inline void
gpiochip_remove_pin_ranges(struct gpio_chip *chip)
{
WARN_ON(1);
}
static inline int devm_gpio_request(struct device *dev, unsigned gpio,
const char *label)
{