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Subjectarch/arm/common/sa1111.c:1436:14: error: implicit declaration of function 'dmabounce_register_dev'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 7cf726a59435301046250c42131554d9ccc566b8
commit: 0a0f0d8be76dcd4390ff538e7060fda34db79717 dma-mapping: split <linux/dma-mapping.h>
date: 2 weeks ago
config: arm-badge4_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a0f0d8be76dcd4390ff538e7060fda34db79717
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0a0f0d8be76dcd4390ff538e7060fda34db79717
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

arch/arm/common/sa1111.c:704:1: warning: no previous prototype for 'sa1111_configure_smc' [-Wmissing-prototypes]
704 | sa1111_configure_smc(struct sa1111 *sachip, int sdram, unsigned int drac,
| ^~~~~~~~~~~~~~~~~~~~
arch/arm/common/sa1111.c: In function 'sa1111_notifier_call':
>> arch/arm/common/sa1111.c:1436:14: error: implicit declaration of function 'dmabounce_register_dev' [-Werror=implicit-function-declaration]
1436 | int ret = dmabounce_register_dev(&dev->dev, 1024, 4096,
| ^~~~~~~~~~~~~~~~~~~~~~
>> arch/arm/common/sa1111.c:1445:4: error: implicit declaration of function 'dmabounce_unregister_dev' [-Werror=implicit-function-declaration]
1445 | dmabounce_unregister_dev(&dev->dev);
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/dmabounce_register_dev +1436 arch/arm/common/sa1111.c

09a2ba2fa0eba3d Russell King 2012-01-29 1427
09a2ba2fa0eba3d Russell King 2012-01-29 1428 static int sa1111_notifier_call(struct notifier_block *n, unsigned long action,
09a2ba2fa0eba3d Russell King 2012-01-29 1429 void *data)
09a2ba2fa0eba3d Russell King 2012-01-29 1430 {
b60752f2b20c167 Russell King 2016-09-06 1431 struct sa1111_dev *dev = to_sa1111_device(data);
09a2ba2fa0eba3d Russell King 2012-01-29 1432
09a2ba2fa0eba3d Russell King 2012-01-29 1433 switch (action) {
09a2ba2fa0eba3d Russell King 2012-01-29 1434 case BUS_NOTIFY_ADD_DEVICE:
09a2ba2fa0eba3d Russell King 2012-01-29 1435 if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL) {
09a2ba2fa0eba3d Russell King 2012-01-29 @1436 int ret = dmabounce_register_dev(&dev->dev, 1024, 4096,
09a2ba2fa0eba3d Russell King 2012-01-29 1437 sa1111_needs_bounce);
09a2ba2fa0eba3d Russell King 2012-01-29 1438 if (ret)
09a2ba2fa0eba3d Russell King 2012-01-29 1439 dev_err(&dev->dev, "failed to register with dmabounce: %d\n", ret);
09a2ba2fa0eba3d Russell King 2012-01-29 1440 }
09a2ba2fa0eba3d Russell King 2012-01-29 1441 break;
09a2ba2fa0eba3d Russell King 2012-01-29 1442
09a2ba2fa0eba3d Russell King 2012-01-29 1443 case BUS_NOTIFY_DEL_DEVICE:
09a2ba2fa0eba3d Russell King 2012-01-29 1444 if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL)
09a2ba2fa0eba3d Russell King 2012-01-29 @1445 dmabounce_unregister_dev(&dev->dev);
09a2ba2fa0eba3d Russell King 2012-01-29 1446 break;
09a2ba2fa0eba3d Russell King 2012-01-29 1447 }
09a2ba2fa0eba3d Russell King 2012-01-29 1448 return NOTIFY_OK;
09a2ba2fa0eba3d Russell King 2012-01-29 1449 }
09a2ba2fa0eba3d Russell King 2012-01-29 1450

:::::: The code at line 1436 was first introduced by commit
:::::: 09a2ba2fa0eba3da747db860ac1c8c0956665316 ARM: sa1111: register sa1111 devices with dmabounce in bus notifier

:::::: TO: Russell King <rmk+kernel@arm.linux.org.uk>
:::::: CC: Russell King <rmk+kernel@arm.linux.org.uk>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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