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drm/i915: Force clean compilation with -Werror 

Our driver compiles clean (nowadays thanks to 0day) but for me, at least,
it would be beneficial if the compiler threw an error rather than a
warning when it found a piece of suspect code. (I use this to
compile-check patch series and want to break on the first compiler error
in order to fix the patch.)

v2: Kick off a new "Debugging" submenu for i915.ko

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Add "DRM i915" to the menu name as requested by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Chris Wilson 2015-05-20 14:12:47 +01:00 committed by Daniel Vetter
parent 16e44e3e93
commit 118182e9d7
3 changed files with 15 additions and 0 deletions
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8
drivers/gpu/drm/i915/Kconfig
View File

@ -71,3 +71,11 @@ config DRM_I915_PRELIMINARY_HW_SUPPORT
option changes the default for that module option.
If in doubt, say "N".
menu "DRM i915 Debugging"
depends on DRM_I915
source drivers/gpu/drm/i915/Kconfig.debug
endmenu

5
drivers/gpu/drm/i915/Kconfig.debug 100644
View File

@ -0,0 +1,5 @@
config DRM_I915_WERROR
bool "Force GCC to throw an error instead of a warning when compiling"
default n
---help---
Add -Werror to the build flags for (and only for) i915.ko

2
drivers/gpu/drm/i915/Makefile
View File

@ -2,6 +2,8 @@
# Makefile for the drm device driver. This driver provides support for the
# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
subdir-ccflags-$(CONFIG_DRM_I915_WERROR) := -Werror
# Please keep these build lists sorted!
# core driver code