diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_force_wake.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_force_wake.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gpu/drm/xe/xe_force_wake.c b/drivers/gpu/drm/xe/xe_force_wake.c index c60db78c44e6..f5067dea59c9 100644 --- a/drivers/gpu/drm/xe/xe_force_wake.c +++ b/drivers/gpu/drm/xe/xe_force_wake.c @@ -211,8 +211,17 @@ unsigned int __must_check xe_force_wake_get(struct xe_force_wake *fw, return ref_incr; } -int xe_force_wake_put(struct xe_force_wake *fw, - unsigned int fw_ref) +/** + * xe_force_wake_put - Decrement the refcount and put domain to sleep if refcount becomes 0 + * @fw: Pointer to the force wake structure + * @fw_ref: return of xe_force_wake_get() + * + * This function reduces the reference counts for domains in fw_ref. If + * refcount for any of the specified domain reaches 0, it puts the domain to sleep + * and waits for acknowledgment for domain to sleep within 50 milisec timeout. + * Warns in case of timeout of ack from domain. + */ +void xe_force_wake_put(struct xe_force_wake *fw, unsigned int fw_ref) { struct xe_gt *gt = fw->gt; struct xe_force_wake_domain *domain; @@ -225,7 +234,7 @@ int xe_force_wake_put(struct xe_force_wake *fw, * in error path of individual domains. */ if (!fw_ref) - return 0; + return; if (xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) fw_ref = fw->initialized_domains; @@ -249,5 +258,4 @@ int xe_force_wake_put(struct xe_force_wake *fw, xe_gt_WARN(gt, ack_fail, "Forcewake domain%s %#x failed to acknowledge sleep request\n", str_plural(hweight_long(ack_fail)), ack_fail); - return ack_fail; } |