diff options
| -rw-r--r-- | drivers/gpio/gpio-max732x.c | 6 | ||||
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 32 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 9 |
3 files changed, 25 insertions, 22 deletions
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c index c04fae1ba32a..9d8bcc69f245 100644 --- a/drivers/gpio/gpio-max732x.c +++ b/drivers/gpio/gpio-max732x.c @@ -709,8 +709,7 @@ static int max732x_probe(struct i2c_client *client, return 0; out_failed: - if (chip->client_dummy) - i2c_unregister_device(chip->client_dummy); + i2c_unregister_device(chip->client_dummy); return ret; } @@ -734,8 +733,7 @@ static int max732x_remove(struct i2c_client *client) gpiochip_remove(&chip->gpio_chip); /* unregister any dummy i2c_client */ - if (chip->client_dummy) - i2c_unregister_device(chip->client_dummy); + i2c_unregister_device(chip->client_dummy); return 0; } diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index e136d666f1e5..05bae9f42f52 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1058,6 +1058,7 @@ static void omap_gpio_mod_init(struct gpio_bank *bank) static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc) { + struct gpio_irq_chip *irq; static int gpio; int irq_base = 0; int ret; @@ -1085,16 +1086,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc) } bank->chip.ngpio = bank->width; - ret = gpiochip_add_data(&bank->chip, bank); - if (ret) { - dev_err(bank->chip.parent, - "Could not register gpio chip %d\n", ret); - return ret; - } - - if (!bank->is_mpuio) - gpio += bank->width; - #ifdef CONFIG_ARCH_OMAP1 /* * REVISIT: Once we have OMAP1 supporting SPARSE_IRQ, we can drop @@ -1115,25 +1106,30 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc) irqc->irq_set_wake = NULL; } - ret = gpiochip_irqchip_add(&bank->chip, irqc, - irq_base, handle_bad_irq, - IRQ_TYPE_NONE); + irq = &bank->chip.irq; + irq->chip = irqc; + irq->handler = handle_bad_irq; + irq->default_type = IRQ_TYPE_NONE; + irq->num_parents = 1; + irq->parents = &bank->irq; + irq->first = irq_base; + ret = gpiochip_add_data(&bank->chip, bank); if (ret) { dev_err(bank->chip.parent, - "Couldn't add irqchip to gpiochip %d\n", ret); - gpiochip_remove(&bank->chip); - return -ENODEV; + "Could not register gpio chip %d\n", ret); + return ret; } - gpiochip_set_chained_irqchip(&bank->chip, irqc, bank->irq, NULL); - ret = devm_request_irq(bank->chip.parent, bank->irq, omap_gpio_irq_handler, 0, dev_name(bank->chip.parent), bank); if (ret) gpiochip_remove(&bank->chip); + if (!bank->is_mpuio) + gpio += bank->width; + return ret; } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index c45dcb0edb12..ec0fd95bbf35 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -459,6 +459,15 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip) if (lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) return -EINVAL; + /* + * Do not allow OPEN_SOURCE & OPEN_DRAIN flags in a single request. If + * the hardware actually supports enabling both at the same time the + * electrical result would be disastrous. + */ + if ((lflags & GPIOHANDLE_REQUEST_OPEN_DRAIN) && + (lflags & GPIOHANDLE_REQUEST_OPEN_SOURCE)) + return -EINVAL; + /* OPEN_DRAIN and OPEN_SOURCE flags only make sense for output mode. */ if (!(lflags & GPIOHANDLE_REQUEST_OUTPUT) && ((lflags & GPIOHANDLE_REQUEST_OPEN_DRAIN) || |