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drm/xe: Ensure caller uses sole domain for xe_force_wake_assert_held

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[ Upstream commit 3541e19d0d ]

xe_force_wake_assert_held() is designed to confirm a particular
forcewake domain's wakefulness; it doesn't verify the wakefulness of
multiple domains. Make sure the caller doesn't input multiple
domains(XE_FORCEWAKE_ALL) as a parameter.

v2
- use domain != XE_FORCEWAKE_ALL (Michal)

v3
- Add kernel-doc

Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Badal Nilawar <badal.nilawar@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607125741.1407331-1-himal.prasad.ghimiray@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Himal Prasad Ghimiray
2024-06-07 18:27:40 +05:30
committed by Greg Kroah-Hartman
parent 1fb1369395
commit 5e183e1c7e
1 changed files with 11 additions and 0 deletions
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drivers/gpu/drm/xe/xe_force_wake.h
+11
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@@ -28,10 +28,21 @@ xe_force_wake_ref(struct xe_force_wake *fw,
return fw->domains[ffs(domain) - 1].ref;
}
/**
* xe_force_wake_assert_held - asserts domain is awake
* @fw : xe_force_wake structure
* @domain: xe_force_wake_domains apart from XE_FORCEWAKE_ALL
*
* xe_force_wake_assert_held() is designed to confirm a particular
* forcewake domain's wakefulness; it doesn't verify the wakefulness of
* multiple domains. Make sure the caller doesn't input multiple
* domains(XE_FORCEWAKE_ALL) as a parameter.
*/
static inline void
xe_force_wake_assert_held(struct xe_force_wake *fw,
enum xe_force_wake_domains domain)
{
xe_gt_assert(fw->gt, domain != XE_FORCEWAKE_ALL);
xe_gt_assert(fw->gt, fw->awake_domains & domain);
}