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drm/i915/guc: Fix blocked context accounting

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commit fc30a6764a54dea42291aeb7009bef7aa2fc1cd4 upstream.

Prior to this patch the blocked context counter was cleared on
init_sched_state (used during registering a context & resets) which is
incorrect. This state needs to be persistent or the counter can read the
incorrect value resulting in scheduling never getting enabled again.

Fixes: 62eaf0ae217d ("drm/i915/guc: Support request cancellation")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210909164744.31249-2-matthew.brost@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthew Brost 2021-09-09 09:47:22 -07:00 committed by Greg Kroah-Hartman
parent f609789699
commit 876d6242d2
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
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@ -152,7 +152,7 @@ static inline void init_sched_state(struct intel_context *ce)
{
/* Only should be called from guc_lrc_desc_pin() */
atomic_set(&ce->guc_sched_state_no_lock, 0);
ce->guc_state.sched_state = 0;
ce->guc_state.sched_state &= SCHED_STATE_BLOCKED_MASK;
}
static inline bool