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| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2018-03-19 20:37:20 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-03-27 20:30:04 +0300 |
| commit | 57bdff48a0a553468f16a65149d51213b5f25fee (patch) | |
| tree | e41048a53e6af90fa6f99c04f606776b8eba7c23 /drivers/gpu/drm/i915/i915_utils.h | |
| parent | ae2f5c009335f4d273d2431539de91c8f28d4736 (diff) | |
| download | linux-57bdff48a0a553468f16a65149d51213b5f25fee.tar.xz | |
drm/i915: Reword warning for missing cases
In some places we end up converting switch statements to a series of
if/else, particularly when introducing helper functions to handle a
group of cases. It's tempting to either leave a wrong warning (since now
we don't have a switch case anymore) or to convert to WARN(1, ...),
but we can just provide a better message and avoid the doubt when such
conversions arrise.
Introducing a warning inside i915_driver_load() just for tests we get:
[ 4535.233717] Missing case (ret == 0)
[ 4535.233868] WARNING: CPU: 1 PID: 795 at drivers/gpu/drm/i915/i915_drv.c:1341 i915_driver_load+0x42/0x10e0 [i915]
which is clear enough.
v2: remove __func__ since this is already on the warning.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180319173720.6974-1-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_utils.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h index 51dbfe5bb418..0695717522ea 100644 --- a/drivers/gpu/drm/i915/i915_utils.h +++ b/drivers/gpu/drm/i915/i915_utils.h @@ -40,8 +40,8 @@ #undef WARN_ON_ONCE #define WARN_ON_ONCE(x) WARN_ONCE((x), "%s", "WARN_ON_ONCE(" __stringify(x) ")") -#define MISSING_CASE(x) WARN(1, "Missing switch case (%lu) in %s\n", \ - (long)(x), __func__) +#define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \ + __stringify(x), (long)(x)) #if GCC_VERSION >= 70000 #define add_overflows(A, B) \ |