diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-lynxpoint.c | 5 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c index 21603e6aceaf..a0804740a0b7 100644 --- a/drivers/gpio/gpio-lynxpoint.c +++ b/drivers/gpio/gpio-lynxpoint.c @@ -248,13 +248,14 @@ static void lp_gpio_irq_handler(unsigned hwirq, struct irq_desc *desc) struct lp_gpio *lg = irq_data_get_irq_handler_data(data); struct irq_chip *chip = irq_data_get_irq_chip(data); u32 base, pin, mask; - unsigned long reg, pending; + unsigned long reg, ena, pending; /* check from GPIO controller which pin triggered the interrupt */ for (base = 0; base < lg->chip.ngpio; base += 32) { reg = lp_gpio_reg(&lg->chip, base, LP_INT_STAT); + ena = lp_gpio_reg(&lg->chip, base, LP_INT_ENABLE); - while ((pending = inl(reg))) { + while ((pending = (inl(reg) & inl(ena)))) { unsigned irq; pin = __ffs(pending); diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 1014cb5e10b0..d66139dc410d 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -183,7 +183,7 @@ static struct gpio_desc *gpiochip_offset_to_desc(struct gpio_chip *chip, */ static int desc_to_gpio(const struct gpio_desc *desc) { - return desc->chip->base + gpio_chip_hwgpio(desc); + return desc - &gpio_desc[0]; } @@ -1452,7 +1452,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) int status = -EPROBE_DEFER; unsigned long flags; - if (!desc || !desc->chip) { + if (!desc) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } @@ -1460,6 +1460,8 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) spin_lock_irqsave(&gpio_lock, flags); chip = desc->chip; + if (chip == NULL) + goto done; if (!try_module_get(chip->owner)) goto done; |