From: Chris Wilson Date: Thu, 21 Jun 2018 09:01:50 +0100 Subject: drm/i915: Redefine EINVAL for debugging Git-commit: d20ac620f0010f9cdcbbe8408e5f22aae3c49faa Patch-mainline: v4.19-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 To aide debugging spurious EINVALs, include a debug message every time we emit one from execbuf. References: https://bugs.freedesktop.org/show_bug.cgi?id=106744 Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Reviewed-by: Joonas Lahtinen Link: https://patchwork.freedesktop.org/patch/msgid/20180621080150.8110-1-chris@chris-wilson.co.uk Acked-by: Petr Tesarik --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -66,6 +66,15 @@ enum { #define __I915_EXEC_ILLEGAL_FLAGS \ (__I915_EXEC_UNKNOWN_FLAGS | I915_EXEC_CONSTANTS_MASK) +/* Catch emission of unexpected errors for CI! */ +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM) +#undef EINVAL +#define EINVAL ({ \ + DRM_DEBUG_DRIVER("EINVAL at %s:%d\n", __func__, __LINE__); \ + 22; \ +}) +#endif + /** * DOC: User command execution *