Re: [PATCH v2 5/5] drm/i915/display: Introduce DEFINE_SHOW_STORE_ATTRIBUTE for debugfs

From: kernel test robot
Date: Sat Oct 31 2020 - 07:07:35 EST


Hi Luo,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mkp-scsi/for-next]
[also build test ERROR on scsi/for-next linus/master v5.10-rc1 next-20201030]
[cannot apply to hnaz-linux-mm/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Luo-Jiaxing/Introduce-a-new-helper-marco-DEFINE_SHOW_STORE_ATTRIBUTE-at-seq_file-c/20201030-165139
base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
config: x86_64-rhel (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/0day-ci/linux/commit/874380b0aa5ca9c7b02e5d7a1aa9a232c46999d9
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Luo-Jiaxing/Introduce-a-new-helper-marco-DEFINE_SHOW_STORE_ATTRIBUTE-at-seq_file-c/20201030-165139
git checkout 874380b0aa5ca9c7b02e5d7a1aa9a232c46999d9
# save the attached .config to linux build tree
make W=1 ARCH=x86_64

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

All errors (new ones prefixed by >>):

In file included from include/drm/drm_debugfs.h:36,
from drivers/gpu/drm/i915/display/intel_display_debugfs.c:6:
>> drivers/gpu/drm/i915/display/intel_display_debugfs.c:1788:29: error: redefinition of 'i915_hpd_short_storm_ctl_open'
1788 | DEFINE_SHOW_STORE_ATTRIBUTE(i915_hpd_short_storm_ctl);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/seq_file.h:195:12: note: in definition of macro 'DEFINE_SHOW_STORE_ATTRIBUTE'
195 | static int __name ## _open(struct inode *inode, struct file *file) \
| ^~~~~~
drivers/gpu/drm/i915/display/intel_display_debugfs.c:1735:1: note: previous definition of 'i915_hpd_short_storm_ctl_open' was here
1735 | i915_hpd_short_storm_ctl_open(struct inode *inode, struct file *file)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/intel_display_debugfs.c:1735:1: warning: 'i915_hpd_short_storm_ctl_open' defined but not used [-Wunused-function]

vim +/i915_hpd_short_storm_ctl_open +1788 drivers/gpu/drm/i915/display/intel_display_debugfs.c

1787
> 1788 DEFINE_SHOW_STORE_ATTRIBUTE(i915_hpd_short_storm_ctl);
1789

---
0-DAY CI Kernel Test Service, Intel Corporation
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