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| author | saturneric <[email protected]> | 2025-11-16 14:34:50 +0000 |
|---|---|---|
| committer | saturneric <[email protected]> | 2025-11-16 14:34:50 +0000 |
| commit | 690862a8d74fee1e07f33dad44b761753f101779 (patch) | |
| tree | f81bdcab8cd5a640518dba5056de6c62bd071eaf /drivers/gpu/drm/panthor/panthor_gpu.c | |
| parent | Merge tag 'v6.17.7' into linux-6.17.y (diff) | |
| parent | Linux 6.17.8 (diff) | |
| download | kernel-linux-6.17.y.tar.gz kernel-linux-6.17.y.zip | |
Merge tag 'v6.17.8' into linux-6.17.ylinux-6.17.y
This is the 6.17.8 stable release
Diffstat (limited to 'drivers/gpu/drm/panthor/panthor_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_gpu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_gpu.c b/drivers/gpu/drm/panthor/panthor_gpu.c index cb7a335e07d7..030409371037 100644 --- a/drivers/gpu/drm/panthor/panthor_gpu.c +++ b/drivers/gpu/drm/panthor/panthor_gpu.c @@ -35,6 +35,9 @@ struct panthor_gpu { /** @reqs_acked: GPU request wait queue. */ wait_queue_head_t reqs_acked; + + /** @cache_flush_lock: Lock to serialize cache flushes */ + struct mutex cache_flush_lock; }; /** @@ -204,6 +207,7 @@ int panthor_gpu_init(struct panthor_device *ptdev) spin_lock_init(&gpu->reqs_lock); init_waitqueue_head(&gpu->reqs_acked); + mutex_init(&gpu->cache_flush_lock); ptdev->gpu = gpu; panthor_gpu_init_info(ptdev); @@ -353,6 +357,9 @@ int panthor_gpu_flush_caches(struct panthor_device *ptdev, bool timedout = false; unsigned long flags; + /* Serialize cache flush operations. */ + guard(mutex)(&ptdev->gpu->cache_flush_lock); + spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags); if (!drm_WARN_ON(&ptdev->base, ptdev->gpu->pending_reqs & GPU_IRQ_CLEAN_CACHES_COMPLETED)) { |