On 18/12/15 12:27, Joonas Lahtinen wrote:
Take advantage of WARN return value to simplify the flow.
Cc: Rob Clark <robdclark@xxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reported-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1d28d90..5a5a3e0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -87,23 +87,18 @@
*/
#define I915_STATE_WARN(condition, format...) ({ \
int __ret_warn_on = !!(condition); \
- if (unlikely(__ret_warn_on)) { \
- if (i915.verbose_state_checks) \
- WARN(1, format); \
- else \
+ if (unlikely(__ret_warn_on)) \
+ if (!WARN(i915.verbose_state_checks, format)) \
DRM_ERROR(format); \
- } \
unlikely(__ret_warn_on); \
})
#define I915_STATE_WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
- if (unlikely(__ret_warn_on)) { \
- if (i915.verbose_state_checks) \
- WARN(1, "WARN_ON(" #condition ")\n"); \
- else \
+ if (unlikely(__ret_warn_on)) \
+ if (!WARN(i915.verbose_state_checks, \
+ "WARN_ON(" #condition ")\n")) \
DRM_ERROR("WARN_ON(" #condition ")\n"); \
These last two lines still have the text of the condition as part of a
format string :(
For compile-testing, you might want to change:
static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv
...
if (WARN_ON(steps % 5 != 0))
return;
to use I915_STATE_WARN_ON() instead of WARN_ON, then you should get a
compile-time warning if the '%' ends up in the format string.
.Dave.
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