gpiolib: provide a declaration of seq_file in gpio/driver.h
Fixes this build error:
In file included from include/asm-generic/gpio.h:13:0,
from include/linux/gpio.h:51,
from include/linux/of_gpio.h:20,
from arch/powerpc/sysdev/ppc4xx_gpio.c:29:
include/linux/gpio/driver.h:85:14: error: 'struct seq_file' declared inside=
parameter list [-Werror]
include/linux/gpio/driver.h:85:14: error: its scope is only this definition=
or declaration, which is probably not what you want [-Werror]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index cd9da38..656a27e 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -5,6 +5,7 @@
struct device;
struct gpio_desc;
+struct seq_file;
/**
* struct gpio_chip - abstract a GPIO controller