diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch b/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch new file mode 100644 index 0000000000..4d7c772f7e --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch @@ -0,0 +1,35 @@ +From 5fa4e656501eed725b9151a38e5b55a45571bf31 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Mon, 6 Dec 2021 16:17:56 +0100 +Subject: [PATCH] drm/vc4: hvs: Remove dlist setup duplication + +Setting the DISPLISTx register needs to occur in every case, and we +don't need to protect the register using the event_lock, so we can just +move it after the if branches and simplify a bit the function. + +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +--- + drivers/gpu/drm/vc4/vc4_hvs.c | 9 +++------ + 1 file changed, 3 insertions(+), 6 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_hvs.c ++++ b/drivers/gpu/drm/vc4/vc4_hvs.c +@@ -616,15 +616,12 @@ static void vc4_hvs_update_dlist(struct + crtc->state->event = NULL; + } + +- HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel), +- vc4_state->mm.start); +- + spin_unlock_irqrestore(&dev->event_lock, flags); +- } else { +- HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel), +- vc4_state->mm.start); + } + ++ HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel), ++ vc4_state->mm.start); ++ + spin_lock_irqsave(&vc4_crtc->irq_lock, flags); + vc4_crtc->current_dlist = vc4_state->mm.start; + spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags); |