diff options
Diffstat (limited to 'drivers/gpio/gpiolib.c')
-rw-r--r-- | drivers/gpio/gpiolib.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 487edf188138..e11a3bb03820 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -504,7 +504,7 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip) struct gpiohandle_request handlereq; struct linehandle_state *lh; struct file *file; - int fd, i, ret; + int fd, i, count = 0, ret; u32 lflags; if (copy_from_user(&handlereq, ip, sizeof(handlereq))) @@ -565,6 +565,7 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip) if (ret) goto out_free_descs; lh->descs[i] = desc; + count = i; if (lflags & GPIOHANDLE_REQUEST_ACTIVE_LOW) set_bit(FLAG_ACTIVE_LOW, &desc->flags); @@ -635,7 +636,7 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip) out_put_unused_fd: put_unused_fd(fd); out_free_descs: - for (; i >= 0; i--) + for (i = 0; i < count; i++) gpiod_free(lh->descs[i]); kfree(lh->label); out_free_lh: @@ -909,7 +910,7 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip) desc = &gdev->descs[offset]; ret = gpiod_request(desc, le->label); if (ret) - goto out_free_desc; + goto out_free_label; le->desc = desc; le->eflags = eflags; @@ -2125,6 +2126,11 @@ EXPORT_SYMBOL_GPL(gpiochip_generic_config); * @pctldev: the pin controller to map to * @gpio_offset: the start offset in the current gpio_chip number space * @pin_group: name of the pin group inside the pin controller + * + * Calling this function directly from a DeviceTree-supported + * pinctrl driver is DEPRECATED. Please see Section 2.1 of + * Documentation/devicetree/bindings/gpio/gpio.txt on how to + * bind pinctrl and gpio drivers via the "gpio-ranges" property. */ int gpiochip_add_pingroup_range(struct gpio_chip *chip, struct pinctrl_dev *pctldev, @@ -2178,6 +2184,11 @@ EXPORT_SYMBOL_GPL(gpiochip_add_pingroup_range); * * Returns: * 0 on success, or a negative error-code on failure. + * + * Calling this function directly from a DeviceTree-supported + * pinctrl driver is DEPRECATED. Please see Section 2.1 of + * Documentation/devicetree/bindings/gpio/gpio.txt on how to + * bind pinctrl and gpio drivers via the "gpio-ranges" property. */ int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, unsigned int gpio_offset, unsigned int pin_offset, @@ -4131,8 +4142,7 @@ struct gpio_descs *__must_check gpiod_get_array(struct device *dev, if (count < 0) return ERR_PTR(count); - descs = kzalloc(sizeof(*descs) + sizeof(descs->desc[0]) * count, - GFP_KERNEL); + descs = kzalloc(struct_size(descs, desc, count), GFP_KERNEL); if (!descs) return ERR_PTR(-ENOMEM); |