Build error: rwlock: error: negative width in bit-field ‘<anonymous>’

[KumarAmitMehta]

Build failures are seen. Logs below

snip from build log

make -C /lib/modules/3.18.7-200.fc21.x86_64/build M=pwd clean *
make[1]: Entering directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'
make[1]: Leaving directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'
make -C /lib/modules/3.18.7-200.fc21.x86_64/build M=pwd modules
make[1]: Entering directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'
CC [M] /home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.o
/home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.c:87:279: error: negative width in bit-field ‘’
__ATTR(id, 0666, id_show, id_store);
^
/home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.c:93:169: error: negative width in bit-field ‘’
__ATTR(foo, S_IWUSR|S_IRGRP|S_IROTH, foo_show, foo_store);
^
scripts/Makefile.build:263: recipe for target '/home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.o' failed
make[2]: ** [/home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.o] Error 1
Makefile:1385: recipe for target 'module/home/amit/Documents/devel/three-O-clock-blues/rwlock' failed
make[1]: *** [module/home/amit/Documents/devel/three-O-clock-blues/rwlock] Error 2
make[1]: Leaving directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'
Makefile:6: recipe for target 'modules' failed
make: *** [modules] Error 2
*

Environment

$ uname -a
Linux discworld 3.18.7-200.fc21.x86_64 #1 SMP Wed Feb 11 21:53:17 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/fedora-release
Fedora release 21 (Twenty One)

[KumarAmitMehta]

With commit #f05d928, this issue is fixed now.

Successful build logs below:

[amit@discworld rwlock]$ make
make -C /lib/modules/3.18.7-200.fc21.x86_64/build M=pwd modules
make[1]: Entering directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'
CC [M] /home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.mod.o
LD [M] /home/amit/Documents/devel/three-O-clock-blues/rwlock/rwlock.ko
make[1]: Leaving directory '/usr/src/kernels/3.18.7-200.fc21.x86_64'