From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-gpio@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Serge Semin <fancer.lancer@gmail.com>
Subject: [PATCH v3 1/4] gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration
Date: Tue, 19 May 2020 16:12:30 +0300 [thread overview]
Message-ID: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> (raw)
Add missed acpi_gpiochip_free_interrupts() call when unregistering ports.
While at it, drop extra check to call acpi_gpiochip_request_interrupts().
There is no need to have an additional check to call
acpi_gpiochip_request_interrupts(). Even without any interrupts available
the registered ACPI Event handlers can be useful for debugging purposes.
Fixes: e6cb3486f5a1 ("gpio: dwapb: add gpio-signaled acpi event support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
---
v3: appended tags (Serge)
drivers/gpio/gpio-dwapb.c | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 8639c4a7f469..e5d844304f8d 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -505,26 +505,33 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
dwapb_configure_irqs(gpio, port, pp);
err = gpiochip_add_data(&port->gc, port);
- if (err)
+ if (err) {
dev_err(gpio->dev, "failed to register gpiochip for port%d\n",
port->idx);
- else
- port->is_registered = true;
+ return err;
+ }
/* Add GPIO-signaled ACPI event support */
- if (pp->has_irq)
- acpi_gpiochip_request_interrupts(&port->gc);
+ acpi_gpiochip_request_interrupts(&port->gc);
- return err;
+ port->is_registered = true;
+
+ return 0;
}
static void dwapb_gpio_unregister(struct dwapb_gpio *gpio)
{
unsigned int m;
- for (m = 0; m < gpio->nr_ports; ++m)
- if (gpio->ports[m].is_registered)
- gpiochip_remove(&gpio->ports[m].gc);
+ for (m = 0; m < gpio->nr_ports; ++m) {
+ struct dwapb_gpio_port *port = &gpio->ports[m];
+
+ if (!port->is_registered)
+ continue;
+
+ acpi_gpiochip_free_interrupts(&port->gc);
+ gpiochip_remove(&port->gc);
+ }
}
static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode,
--
2.26.2
next reply other threads:[~2020-05-19 13:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 13:12 Andy Shevchenko [this message]
2020-05-19 13:12 ` [PATCH v3 2/4] gpio: dwapb: avoid error message for optional IRQ Andy Shevchenko
2020-05-19 13:12 ` [PATCH v3 3/4] gpio: dwapb: Don't use IRQ 0 as valid Linux interrupt Andy Shevchenko
2020-05-19 13:12 ` [PATCH v3 4/4] gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property Andy Shevchenko
2020-05-25 9:05 ` [PATCH v3 1/4] gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration Linus Walleij
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