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drm/xe: Grab mem_access when disabling C6 on skip_guc_pc platforms

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If skip_guc_pc is set for a platform, C6 is disabled directly without
acquiring a mem_access reference, triggering an assertion inside
xe_gt_idle_disable_c6.

Fixes: 975e4a3795 ("drm/xe: Manually setup C6 when skip_guc_pc is set")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240126220613.865939-2-matthew.d.roper@intel.com
(cherry picked from commit 9f5971bdf7)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
This commit is contained in:
Matt Roper 2024-01-26 14:06:14 -08:00 committed by Thomas Hellström
parent f9c15a678d
commit 6d2096239a
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/xe/xe_guc_pc.c
View file

@ -963,7 +963,9 @@ void xe_guc_pc_fini(struct xe_guc_pc *pc)
struct xe_device *xe = pc_to_xe(pc);
if (xe->info.skip_guc_pc) {
xe_device_mem_access_get(xe);
xe_gt_idle_disable_c6(pc_to_gt(pc));
xe_device_mem_access_put(xe);
return;
}