drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap'

From: kbuild test robot
Date: Sun Jul 17 2016 - 04:12:52 EST


FYI, the error/warning still remains.

tree: master
head: 92d21ac74a9e3c09b0b01c764e530657e4c85c49
commit: ca668f0edfae65438c3f0a3ad5d3e59e3515915f mfd: syscon: Set regmap max_register in of_syscon_register
date: 4 months ago
config: um-allyesconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
git checkout ca668f0edfae65438c3f0a3ad5d3e59e3515915f
# save the attached .config to linux build tree
make ARCH=um

All errors (new ones prefixed by >>):

drivers/mfd/syscon.c: In function 'of_syscon_register':
>> drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap' [-Werror=implicit-function-declaration]
base = ioremap(res.start, resource_size(&res));
drivers/mfd/syscon.c:67:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
base = ioremap(res.start, resource_size(&res));
drivers/mfd/syscon.c:109:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

vim +/ioremap +67 drivers/mfd/syscon.c

62 if (of_address_to_resource(np, 0, &res)) {
63 ret = -ENOMEM;
64 goto err_map;
65 }
> 67 base = ioremap(res.start, resource_size(&res));
68 if (!base) {
69 ret = -ENOMEM;
70 goto err_map;

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Attachment: .config.gz
Description: Binary data