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tools/gpio: Fix build error with musl libc 

The GPIO tools build fails when using a buildroot toolchain that uses musl
as it's C library:

arm-broomstick-linux-musleabi-gcc -Wp,-MD,./.gpio-event-mon.o.d \
 -Wp,-MT,gpio-event-mon.o -O2 -Wall -g -D_GNU_SOURCE \
 -Iinclude -D"BUILD_STR(s)=#s" -c -o gpio-event-mon.o gpio-event-mon.c
gpio-event-mon.c:30:6: error: unknown type name ‘u_int32_t’; did you mean ‘uint32_t’?
      u_int32_t handleflags,
      ^~~~~~~~~
      uint32_t

The glibc headers installed on my laptop include sys/types.h in
unistd.h, but it appears that musl does not.

Fixes: 97f69747d8 ("tools/gpio: add the gpio-event-mon tool")
Cc: stable@vger.kernel.org
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Joel Stanley 2017-12-21 11:11:31 +10:30 committed by Linus Walleij
parent 93ebe8636b
commit 1696784eb7
1 changed files with 1 additions and 0 deletions
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tools/gpio/gpio-event-mon.c
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@ -24,6 +24,7 @@
#include <getopt.h> #include <getopt.h>
#include <inttypes.h> #include <inttypes.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/types.h>
#include <linux/gpio.h> #include <linux/gpio.h>
int monitor_device(const char *device_name, int monitor_device(const char *device_name,