gpio fixes for v5.16-rc2

- fix a coccicheck warning in gpio-virtio
 - fix gpio selftests build issues
 - fix a Kconfig issue in gpio-rockchip
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Merge tag 'gpio-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - fix a coccicheck warning in gpio-virtio

 - fix gpio selftests build issues

 - fix a Kconfig issue in gpio-rockchip

* tag 'gpio-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: rockchip: needs GENERIC_IRQ_CHIP to fix build errors
  selftests: gpio: restore CFLAGS options
  selftests: gpio: fix uninitialised variable warning
  selftests: gpio: fix gpio compiling error
  gpio: virtio: remove unneeded semicolon

drivers/gpio/Kconfig

@@ -523,6 +523,7 @@ config GPIO_REG
 config GPIO_ROCKCHIP
 	tristate "Rockchip GPIO support"
 	depends on ARCH_ROCKCHIP || COMPILE_TEST
+	select GENERIC_IRQ_CHIP
 	select GPIOLIB_IRQCHIP
 	default ARCH_ROCKCHIP
 	help

drivers/gpio/gpio-virtio.c

@@ -434,7 +434,7 @@ static void virtio_gpio_event_vq(struct virtqueue *vq)
 		ret = generic_handle_domain_irq(vgpio->gc.irq.domain, gpio);
 		if (ret)
 			dev_err(dev, "failed to handle interrupt: %d\n", ret);
-	};
+	}
 }
 
 static void virtio_gpio_request_vq(struct virtqueue *vq)

tools/testing/selftests/gpio/Makefile

@@ -3,5 +3,6 @@
 TEST_PROGS := gpio-mockup.sh
 TEST_FILES := gpio-mockup-sysfs.sh
 TEST_GEN_PROGS_EXTENDED := gpio-mockup-cdev
+CFLAGS += -O2 -g -Wall -I../../../../usr/include/
 
 include ../lib.mk

tools/testing/selftests/gpio/gpio-mockup-cdev.c

@@ -117,7 +117,7 @@ int main(int argc, char *argv[])
 {
 	char *chip;
 	int opt, ret, cfd, lfd;
-	unsigned int offset, val, abiv;
+	unsigned int offset, val = 0, abiv;
 	uint32_t flags_v1;
 	uint64_t flags_v2;