✗ CI.checksparse: warning for Introduce drm sharpness property (rev5)

[Patchwork]

== Series Details ==

Series: Introduce drm sharpness property (rev5)
URL   : https://patchwork.freedesktop.org/series/139954/
State : warning

== Summary ==

+ trap cleanup EXIT
+ KERNEL=/kernel
+ MT=/root/linux/maintainer-tools
+ git clone https://gitlab.freedesktop.org/drm/maintainer-tools /root/linux/maintainer-tools
Cloning into '/root/linux/maintainer-tools'...
warning: redirecting to https://gitlab.freedesktop.org/drm/maintainer-tools.git/
+ make -C /root/linux/maintainer-tools
make: Entering directory '/root/linux/maintainer-tools'
cc -O2 -g -Wextra -o remap-log remap-log.c
make: Leaving directory '/root/linux/maintainer-tools'
+ cd /kernel
+ git config --global --add safe.directory /kernel
+ /root/linux/maintainer-tools/dim sparse --fast 77d5af2a7bb2060dcf8cceebb1b0d39f0b9b9fab
Sparse version: 0.6.4 (Ubuntu: 0.6.4-4ubuntu3)
Fast mode used, each commit won't be checked separately.
+drivers/gpu/drm/i915/display/intel_casf.c:36:11: warning: symbol 'filtercoeff_1' was not declared. Should it be static?
+drivers/gpu/drm/i915/display/intel_casf.c:42:11: warning: symbol 'filtercoeff_2' was not declared. Should it be static?
+drivers/gpu/drm/i915/display/intel_casf.c:48:11: warning: symbol 'filtercoeff_3' was not declared. Should it be static?

+ cleanup
++ stat -c %u:%g /kernel
+ chown -R 1003:1003 /kernel