diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-05-19 16:12:33 +0300 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2020-05-25 11:05:09 +0200 |
| commit | 551cb86cbb7d85a3d16d10f6fb4fb954f13a7556 (patch) | |
| tree | bd8882b704d23f09ef31a3f710a8e490b9337512 /drivers/gpio | |
| parent | gpio: dwapb: Don't use IRQ 0 as valid Linux interrupt (diff) | |
| download | wireguard-linux-551cb86cbb7d85a3d16d10f6fb4fb954f13a7556.tar.xz wireguard-linux-551cb86cbb7d85a3d16d10f6fb4fb954f13a7556.zip | |
gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property
has_irq member of struct dwapb_port_property is used only in one place,
so, make it local test instead and remove from the structure.
This local test is using memchr_inv() which is quite efficient in comparison
to the original loop and possible little overhead can be neglected.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20200519131233.59032-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-dwapb.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index d3765672c42b..1d8d55bd63aa 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -366,6 +366,11 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio, irq_hw_number_t hwirq; int err, i; + if (memchr_inv(pp->irq, 0, sizeof(pp->irq)) == NULL) { + dev_warn(gpio->dev, "no IRQ for port%d\n", pp->idx); + return; + } + gpio->domain = irq_domain_create_linear(fwnode, ngpio, &irq_generic_chip_ops, gpio); if (!gpio->domain) @@ -501,7 +506,8 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, if (pp->idx == 0) port->gc.set_config = dwapb_gpio_set_config; - if (pp->has_irq) + /* Only port A can provide interrupts in all configurations of the IP */ + if (pp->idx == 0) dwapb_configure_irqs(gpio, port, pp); err = gpiochip_add_data(&port->gc, port); @@ -550,13 +556,7 @@ static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode, irq = platform_get_irq_optional(to_platform_device(dev), j); if (irq > 0) pp->irq[j] = irq; - - if (pp->irq[j]) - pp->has_irq = true; } - - if (!pp->has_irq) - dev_warn(dev, "no irq for port%d\n", pp->idx); } static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev) |