[PATCH 04/27] extcon: Allow compile test of GPIO consumers if !GPIOLIB

[Geert Uytterhoeven]

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.

If GPIOLIB=n and asm-generic/gpio.h is not used:

    drivers/extcon/extcon-usb-gpio.c: In function âusb_extcon_detect_cableâ:
    drivers/extcon/extcon-usb-gpio.c:63: error: implicit declaration of function âgpiod_get_value_cansleepâ
    drivers/extcon/extcon-usb-gpio.c: In function âusb_extcon_probeâ:
    drivers/extcon/extcon-usb-gpio.c:116: error: implicit declaration of function âdevm_gpiod_getâ
    drivers/extcon/extcon-usb-gpio.c:116: warning: assignment makes pointer from integer without a cast
    drivers/extcon/extcon-usb-gpio.c:122: error: implicit declaration of function âgpiod_set_debounceâ
    drivers/extcon/extcon-usb-gpio.c:129: error: implicit declaration of function âgpiod_to_irqâ

Add the missing #include <linux/gpio/consumer.h> to fix this.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
---
 drivers/extcon/Kconfig           | 4 ++--
 drivers/extcon/extcon-usb-gpio.c | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index fdc0bf0543ce43ec..5d8d7244349870ca 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -30,7 +30,7 @@ config EXTCON_ARIZONA
 
 config EXTCON_GPIO
 	tristate "GPIO extcon support"
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	help
 	  Say Y here to enable GPIO based extcon support. Note that GPIO
 	  extcon supports single state per extcon instance.
@@ -105,7 +105,7 @@ config EXTCON_SM5502
 
 config EXTCON_USB_GPIO
 	tristate "USB GPIO extcon support"
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	help
 	  Say Y here to enable GPIO based USB cable detection extcon support.
 	  Used typically if GPIO is used for USB ID pin detection.
diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index de67fce189840eee..6c6fc33029826132 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/extcon.h>
+#include <linux/gpio/consumer.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-- 
1.9.1

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