drm/i915/pmu: Hide the (unsigned long)ptr cast

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We pretend the PMU config id is a pointer value when encoding it into
the device parameters for presentation via sysfs. This requires casting
of an unsigned long into and out of the pointer member, which annoys
smatch:

drivers/gpu/drm/i915/i915_pmu.c:684 i915_pmu_event_show() warn: argument 3 to %lx specifier is cast from pointer

Instead of abusing a generic dev_ext_attribute, define our own typesafe
attributes.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171123211751.2885-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

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This commit is contained in:

Chris Wilson 2017-11-23 21:17:51 +00:00

parent 8911a31c81

commit b7d3aabf90

1 changed files with 20 additions and 10 deletions

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drivers/gpu/drm/i915/i915_pmu.c

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