arch/powerpc/platforms/83xx/suspend.c:210:3: error: call to undeclared function 'enable_kernel_fp'; ISO C99 and later do not support implicit function declarations
From: kernel test robot
Date: Sat Feb 18 2023 - 01:21:58 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 38f8ccde04a3fa317b51b05e63c3cb57e1641931
commit: e8c07082a810fbb9db303a2b66b66b8d7e588b53 Kbuild: move to -std=gnu11
date: 11 months ago
config: powerpc-randconfig-r013-20230218 (https://download.01.org/0day-ci/archive/20230218/202302181414.nAdxC08J-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c07082a810fbb9db303a2b66b66b8d7e588b53
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e8c07082a810fbb9db303a2b66b66b8d7e588b53
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/platforms/83xx/ drivers/android/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202302181414.nAdxC08J-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
>> arch/powerpc/platforms/83xx/suspend.c:210:3: error: call to undeclared function 'enable_kernel_fp'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
enable_kernel_fp();
^
arch/powerpc/platforms/83xx/suspend.c:210:3: note: did you mean 'enable_kernel_vsx'?
arch/powerpc/include/asm/switch_to.h:75:20: note: 'enable_kernel_vsx' declared here
static inline void enable_kernel_vsx(void)
^
1 error generated.
vim +/enable_kernel_fp +210 arch/powerpc/platforms/83xx/suspend.c
87faaabb09d080 Anton Vorontsov 2009-12-10 173
d49747bdfb2dde Scott Wood 2007-10-09 174 static int mpc83xx_suspend_enter(suspend_state_t state)
d49747bdfb2dde Scott Wood 2007-10-09 175 {
d49747bdfb2dde Scott Wood 2007-10-09 176 int ret = -EAGAIN;
d49747bdfb2dde Scott Wood 2007-10-09 177
d49747bdfb2dde Scott Wood 2007-10-09 178 /* Don't go to sleep if there's a race where pci_pm_state changes
d49747bdfb2dde Scott Wood 2007-10-09 179 * between the agent thread checking it and the PM code disabling
d49747bdfb2dde Scott Wood 2007-10-09 180 * interrupts.
d49747bdfb2dde Scott Wood 2007-10-09 181 */
d49747bdfb2dde Scott Wood 2007-10-09 182 if (wake_from_pci) {
d49747bdfb2dde Scott Wood 2007-10-09 183 if (pci_pm_state != (deep_sleeping ? 3 : 2))
d49747bdfb2dde Scott Wood 2007-10-09 184 goto out;
d49747bdfb2dde Scott Wood 2007-10-09 185
d49747bdfb2dde Scott Wood 2007-10-09 186 out_be32(&pmc_regs->config1,
d49747bdfb2dde Scott Wood 2007-10-09 187 in_be32(&pmc_regs->config1) | PMCCR1_PME_EN);
d49747bdfb2dde Scott Wood 2007-10-09 188 }
d49747bdfb2dde Scott Wood 2007-10-09 189
d49747bdfb2dde Scott Wood 2007-10-09 190 /* Put the system into low-power mode and the RAM
d49747bdfb2dde Scott Wood 2007-10-09 191 * into self-refresh mode once the core goes to
d49747bdfb2dde Scott Wood 2007-10-09 192 * sleep.
d49747bdfb2dde Scott Wood 2007-10-09 193 */
d49747bdfb2dde Scott Wood 2007-10-09 194
d49747bdfb2dde Scott Wood 2007-10-09 195 out_be32(&pmc_regs->config, PMCCR_SLPEN | PMCCR_DLPEN);
d49747bdfb2dde Scott Wood 2007-10-09 196
d49747bdfb2dde Scott Wood 2007-10-09 197 /* If it has deep sleep (i.e. it's an 831x or compatible),
d49747bdfb2dde Scott Wood 2007-10-09 198 * disable power to the core upon entering sleep mode. This will
d49747bdfb2dde Scott Wood 2007-10-09 199 * require going through the boot firmware upon a wakeup event.
d49747bdfb2dde Scott Wood 2007-10-09 200 */
d49747bdfb2dde Scott Wood 2007-10-09 201
d49747bdfb2dde Scott Wood 2007-10-09 202 if (deep_sleeping) {
87faaabb09d080 Anton Vorontsov 2009-12-10 203 mpc83xx_suspend_save_regs();
87faaabb09d080 Anton Vorontsov 2009-12-10 204
d49747bdfb2dde Scott Wood 2007-10-09 205 out_be32(&pmc_regs->mask, PMCER_ALL);
d49747bdfb2dde Scott Wood 2007-10-09 206
d49747bdfb2dde Scott Wood 2007-10-09 207 out_be32(&pmc_regs->config1,
d49747bdfb2dde Scott Wood 2007-10-09 208 in_be32(&pmc_regs->config1) | PMCCR1_POWER_OFF);
d49747bdfb2dde Scott Wood 2007-10-09 209
d49747bdfb2dde Scott Wood 2007-10-09 @210 enable_kernel_fp();
d49747bdfb2dde Scott Wood 2007-10-09 211
d49747bdfb2dde Scott Wood 2007-10-09 212 mpc83xx_enter_deep_sleep(immrbase);
d49747bdfb2dde Scott Wood 2007-10-09 213
d49747bdfb2dde Scott Wood 2007-10-09 214 out_be32(&pmc_regs->config1,
d49747bdfb2dde Scott Wood 2007-10-09 215 in_be32(&pmc_regs->config1) & ~PMCCR1_POWER_OFF);
d49747bdfb2dde Scott Wood 2007-10-09 216
d49747bdfb2dde Scott Wood 2007-10-09 217 out_be32(&pmc_regs->mask, PMCER_PMCI);
87faaabb09d080 Anton Vorontsov 2009-12-10 218
87faaabb09d080 Anton Vorontsov 2009-12-10 219 mpc83xx_suspend_restore_regs();
d49747bdfb2dde Scott Wood 2007-10-09 220 } else {
d49747bdfb2dde Scott Wood 2007-10-09 221 out_be32(&pmc_regs->mask, PMCER_PMCI);
d49747bdfb2dde Scott Wood 2007-10-09 222
d49747bdfb2dde Scott Wood 2007-10-09 223 mpc6xx_enter_standby();
d49747bdfb2dde Scott Wood 2007-10-09 224 }
d49747bdfb2dde Scott Wood 2007-10-09 225
d49747bdfb2dde Scott Wood 2007-10-09 226 ret = 0;
d49747bdfb2dde Scott Wood 2007-10-09 227
d49747bdfb2dde Scott Wood 2007-10-09 228 out:
d49747bdfb2dde Scott Wood 2007-10-09 229 out_be32(&pmc_regs->config1,
d49747bdfb2dde Scott Wood 2007-10-09 230 in_be32(&pmc_regs->config1) & ~PMCCR1_PME_EN);
d49747bdfb2dde Scott Wood 2007-10-09 231
d49747bdfb2dde Scott Wood 2007-10-09 232 return ret;
d49747bdfb2dde Scott Wood 2007-10-09 233 }
d49747bdfb2dde Scott Wood 2007-10-09 234
:::::: The code at line 210 was first introduced by commit
:::::: d49747bdfb2ddebea24d1580da55b79d093d48a9 powerpc/mpc83xx: Power Management support
:::::: TO: Scott Wood <scottwood@xxxxxxxxxxxxx>
:::::: CC: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
--
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