[PATCH v4 05/22] gpio: Probe GPIO drivers on demand
From: Tomeu Vizoso <hidden>
Date: 2015-09-07 12:24:51
Also in:
linux-acpi, linux-devicetree, linux-gpio, lkml
Subsystem:
gpio subsystem, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
When looking up a gpiochip through its firmware node, probe it if it hasn't already. The goal is to reduce deferred probes to a minimum, as it makes it very cumbersome to find out why a device failed to probe, and can introduce very big delays in when a critical device is probed. Signed-off-by: Tomeu Vizoso <redacted> --- Changes in v4: None Changes in v3: None Changes in v2: None drivers/gpio/gpiolib-of.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index fa6e3c8823d6..9a439dab7a87 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c@@ -19,6 +19,7 @@ #include <linux/gpio/consumer.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/pinctrl/pinctrl.h> #include <linux/slab.h>
@@ -95,6 +96,8 @@ struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np, return ERR_PTR(ret); } + of_device_probe(gg_data.gpiospec.np); + gpiochip_find(&gg_data, of_gpiochip_find_and_xlate); of_node_put(gg_data.gpiospec.np);
--
2.4.3