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drm/i915: fix build for CONFIG_BUG=n

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If CONFIG_BUG=n __WARN_printf won't be defined leading to the below
build failure. The double underscores should have told us to steer clear
of it anyway.

drivers/gpu/drm/i915/intel_display.c: In function ‘assert_pll’:
drivers/gpu/drm/i915/intel_display.c:1027:2: error: implicit declaration
of function ‘__WARN_printf’ [-Werror=implicit-function-declaration]
  I915_STATE_WARN(cur_state != state,

Use WARN(1, ...) instead. It handles CONFIG_BUG=n gracefully and, with
the constant condition, a sane compiler should reduce it to
__WARN_printf.

This is a regression introduced by

commit e2c719b75c8c186deb86570d8466df9e9eff919b
Author: Rob Clark <robdclark@gmail.com>
Date:   Mon Dec 15 13:56:32 2014 -0500

    drm/i915: tame the chattermouth (v2)

Reported-by: Jim Davis <jim.epost@gmail.com>
Reference: http://mid.gmane.org/CA+r1ZhgHTi7bS2irhtuSUs9aO=Br1dumN8=oAOeaMJDZ_ZhwBw@mail.gmail.com
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2015-01-12 15:45:31 +02:00 committed by Daniel Vetter
parent 0a87a2db48
commit 2f3408c7ef
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/i915_drv.h
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@ -83,7 +83,7 @@
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) { \
if (i915.verbose_state_checks) \
__WARN_printf(format); \
WARN(1, format); \
else \
DRM_ERROR(format); \
} \
@ -94,7 +94,7 @@
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) { \
if (i915.verbose_state_checks) \
__WARN_printf("WARN_ON(" #condition ")\n"); \
WARN(1, "WARN_ON(" #condition ")\n"); \
else \
DRM_ERROR("WARN_ON(" #condition ")\n"); \
} \