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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-05-19 16:12:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-24 17:50:16 +0200 |
| commit | 2ec338547c67ffd5fd9670ec1612f56111dfe520 (patch) | |
| tree | 77bf298e14eeba4167bd6cad43bca82b41ba0152 /drivers/gpio/gpio-dwapb.c | |
| parent | 02bdd581404d58315a1b8022b4d09fba81483e3d (diff) | |
| download | linux-stable-2ec338547c67ffd5fd9670ec1612f56111dfe520.tar.gz linux-stable-2ec338547c67ffd5fd9670ec1612f56111dfe520.tar.bz2 linux-stable-2ec338547c67ffd5fd9670ec1612f56111dfe520.zip | |
gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration
[ Upstream commit 494a94e38dcf62543a32a4424d646ff80b4b28bd ]
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>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20200519131233.59032-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpio/gpio-dwapb.c')
| -rw-r--r-- | drivers/gpio/gpio-dwapb.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 92e127e74813..02cf4c43a4c4 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -533,26 +533,33 @@ 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 struct dwapb_platform_data * |