Re: [PATCH 6.14.y] drm/xe/gsc: do not flush the GSC worker from the reset path

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 03552d8ac0afcc080c339faa0b726e2c0e9361cb

Note: The patch differs from the upstream commit:
---
1:  03552d8ac0afc ! 1:  ec3abfe7a63b2 drm/xe/gsc: do not flush the GSC worker from the reset path
    @@ Commit message
         Link: https://lore.kernel.org/r/20250502155104.2201469-1-daniele.ceraolospurio@intel.com
         (cherry picked from commit 12370bfcc4f0bdf70279ec5b570eb298963422b5)
         Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
    +    (cherry picked from commit 03552d8ac0afcc080c339faa0b726e2c0e9361cb)
     
      ## drivers/gpu/drm/xe/xe_gsc.c ##
    -@@ drivers/gpu/drm/xe/xe_gsc.c: void xe_gsc_wait_for_worker_completion(struct xe_gsc *gsc)
    - 		flush_work(&gsc->work);
    +@@ drivers/gpu/drm/xe/xe_gsc.c: void xe_gsc_remove(struct xe_gsc *gsc)
    + 	xe_gsc_proxy_remove(gsc);
      }
      
     +void xe_gsc_stop_prepare(struct xe_gsc *gsc)
    @@ drivers/gpu/drm/xe/xe_gsc.h: struct xe_hw_engine;
      void xe_gsc_wait_for_worker_completion(struct xe_gsc *gsc);
     +void xe_gsc_stop_prepare(struct xe_gsc *gsc);
      void xe_gsc_load_start(struct xe_gsc *gsc);
    + void xe_gsc_remove(struct xe_gsc *gsc);
      void xe_gsc_hwe_irq_handler(struct xe_hw_engine *hwe, u16 intr_vec);
    - 
     
      ## drivers/gpu/drm/xe/xe_gsc_proxy.c ##
     @@ drivers/gpu/drm/xe/xe_gsc_proxy.c: bool xe_gsc_proxy_init_done(struct xe_gsc *gsc)
    @@ drivers/gpu/drm/xe/xe_gsc_proxy.c: bool xe_gsc_proxy_init_done(struct xe_gsc *gs
     
      ## drivers/gpu/drm/xe/xe_gsc_proxy.h ##
     @@ drivers/gpu/drm/xe/xe_gsc_proxy.h: struct xe_gsc;
    - 
      int xe_gsc_proxy_init(struct xe_gsc *gsc);
      bool xe_gsc_proxy_init_done(struct xe_gsc *gsc);
    + void xe_gsc_proxy_remove(struct xe_gsc *gsc);
     +int xe_gsc_wait_for_proxy_init_done(struct xe_gsc *gsc);
      int xe_gsc_proxy_start(struct xe_gsc *gsc);
      
    @@ drivers/gpu/drm/xe/xe_uc.h: int xe_uc_reset_prepare(struct xe_uc *uc);
     +void xe_uc_suspend_prepare(struct xe_uc *uc);
      int xe_uc_suspend(struct xe_uc *uc);
      int xe_uc_sanitize_reset(struct xe_uc *uc);
    - void xe_uc_declare_wedged(struct xe_uc *uc);
    + void xe_uc_remove(struct xe_uc *uc);
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.14.y       |  Success    |  Success   |