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drm/xe/vf: Fix register value lookup

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We should use the number of actual entries stored in the runtime
register buffer, not the maximum number of entries that this buffer
can hold, otherwise bsearch() may fail and we may miss the data and
wrongly report unexpected access to some registers.

Fixes: 4edadc41a3 ("drm/xe/vf: Use register values obtained from the PF")
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240718203155.486-1-michal.wajdeczko@intel.com
(cherry picked from commit ad16682db18f4414e53bba1ce0db75b08bdc4dff)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Michal Wajdeczko 2024-07-18 22:31:55 +02:00 committed by Rodrigo Vivi
parent 817c70e2ba
commit 64da63cd3f
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1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/xe/xe_gt_sriov_vf.c
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@ -850,7 +850,7 @@ static struct vf_runtime_reg *vf_lookup_reg(struct xe_gt *gt, u32 addr)
xe_gt_assert(gt, IS_SRIOV_VF(gt_to_xe(gt)));
return bsearch(&key, runtime->regs, runtime->regs_size, sizeof(key),
return bsearch(&key, runtime->regs, runtime->num_regs, sizeof(key),
vf_runtime_reg_cmp);
}