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The LPE audio is a child device of i915, it is powered up and down
alongside the igfx and presents no independent runtime interface. This
aptly fulfils the description of a "No-Callback" Device, so mark it
thus.
Fixes: 183c00350ccd ("drm/i915: Fix runtime PM for LPE audio")
Testcase: igt/pm_rpm/basic-pci-d3-state
Testcase: igt/pm_rpm/basic-rte
Signed-off-by: Chris Wilson <chris(a)chris-wilson.co.uk>
Cc: Takashi Iwai <tiwai(a)suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart(a)linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala(a)linux.intel.com>
Cc: stable(a)vger.kernel.org
---
drivers/gpu/drm/i915/intel_lpe_audio.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lpe_audio.c b/drivers/gpu/drm/i915/intel_lpe_audio.c
index 6269750e2b54..430732720e65 100644
--- a/drivers/gpu/drm/i915/intel_lpe_audio.c
+++ b/drivers/gpu/drm/i915/intel_lpe_audio.c
@@ -126,9 +126,7 @@ lpe_audio_platdev_create(struct drm_i915_private *dev_priv)
return platdev;
}
- pm_runtime_forbid(&platdev->dev);
- pm_runtime_set_active(&platdev->dev);
- pm_runtime_enable(&platdev->dev);
+ pm_runtime_no_callbacks(&platdev->dev);
return platdev;
}
--
2.18.0
When there's no scaling requested ->is_unity should be true no matter
the format.
Also, when no scaling is requested and we have a multi-planar YUV
format, we should leave ->y_scaling[0] to VC4_SCALING_NONE and only
set ->x_scaling[0] to VC4_SCALING_PPF.
Doing this fixes an hardly visible artifact (seen when using modetest
and a rather big overlay plane in YUV420).
Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon(a)bootlin.com>
---
drivers/gpu/drm/vc4/vc4_plane.c | 25 ++++++++++++-------------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index cfb50fedfa2b..a3275fa66b7b 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -297,6 +297,9 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
vc4_state->y_scaling[0] = vc4_get_scaling_mode(vc4_state->src_h[0],
vc4_state->crtc_h);
+ vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE &&
+ vc4_state->y_scaling[0] == VC4_SCALING_NONE);
+
if (num_planes > 1) {
vc4_state->is_yuv = true;
@@ -312,24 +315,17 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
vc4_get_scaling_mode(vc4_state->src_h[1],
vc4_state->crtc_h);
- /* YUV conversion requires that scaling be enabled,
- * even on a plane that's otherwise 1:1. Choose TPZ
- * for simplicity.
+ /* YUV conversion requires that horizontal scaling be enabled,
+ * even on a plane that's otherwise 1:1. Looks like only PPF
+ * works in that case, so let's pick that one.
*/
- if (vc4_state->x_scaling[0] == VC4_SCALING_NONE)
- vc4_state->x_scaling[0] = VC4_SCALING_TPZ;
- if (vc4_state->y_scaling[0] == VC4_SCALING_NONE)
- vc4_state->y_scaling[0] = VC4_SCALING_TPZ;
+ if (vc4_state->is_unity)
+ vc4_state->x_scaling[0] = VC4_SCALING_PPF;
} else {
vc4_state->x_scaling[1] = VC4_SCALING_NONE;
vc4_state->y_scaling[1] = VC4_SCALING_NONE;
}
- vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE &&
- vc4_state->y_scaling[0] == VC4_SCALING_NONE &&
- vc4_state->x_scaling[1] == VC4_SCALING_NONE &&
- vc4_state->y_scaling[1] == VC4_SCALING_NONE);
-
/* No configuring scaling on the cursor plane, since it gets
non-vblank-synced updates, and scaling requires requires
LBM changes which have to be vblank-synced.
@@ -672,7 +668,10 @@ static int vc4_plane_mode_set(struct drm_plane *plane,
vc4_dlist_write(vc4_state, SCALER_CSC2_ITR_R_601_5);
}
- if (!vc4_state->is_unity) {
+ if (vc4_state->x_scaling[0] != VC4_SCALING_NONE ||
+ vc4_state->x_scaling[1] != VC4_SCALING_NONE ||
+ vc4_state->y_scaling[0] != VC4_SCALING_NONE ||
+ vc4_state->y_scaling[1] != VC4_SCALING_NONE) {
/* LBM Base Address. */
if (vc4_state->y_scaling[0] != VC4_SCALING_NONE ||
vc4_state->y_scaling[1] != VC4_SCALING_NONE) {
--
2.14.1
From: Mike Rapoport <rppt(a)linux.vnet.ibm.com>
Subject: userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails
The fix in 0cbb4b4f4c44 ("userfaultfd: clear the vma->vm_userfaultfd_ctx
if UFFD_EVENT_FORK fails") cleared the vma->vm_userfaultfd_ctx but kept
userfaultfd flags in vma->vm_flags that were copied from the parent
process VMA.
As the result, there is an inconsistency between the values of
vma->vm_userfaultfd_ctx.ctx and vma->vm_flags which triggers BUG_ON in
userfaultfd_release().
Clearing the uffd flags from vma->vm_flags in case of UFFD_EVENT_FORK
failure resolves the issue.
Link: http://lkml.kernel.org/r/1532931975-25473-1-git-send-email-rppt@linux.vnet.…
Fixes: 0cbb4b4f4c44 ("userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails")
Signed-off-by: Mike Rapoport <rppt(a)linux.vnet.ibm.com>
Reported-by: syzbot+121be635a7a35ddb7dcb(a)syzkaller.appspotmail.com
Cc: Andrea Arcangeli <aarcange(a)redhat.com>
Cc: Eric Biggers <ebiggers3(a)gmail.com>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
fs/userfaultfd.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/userfaultfd.c~userfaultfd-remove-uffd-flags-from-vma-vm_flags-if-uffd_event_fork-fails
+++ a/fs/userfaultfd.c
@@ -633,8 +633,10 @@ static void userfaultfd_event_wait_compl
/* the various vma->vm_userfaultfd_ctx still points to it */
down_write(&mm->mmap_sem);
for (vma = mm->mmap; vma; vma = vma->vm_next)
- if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx)
+ if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx) {
vma->vm_userfaultfd_ctx = NULL_VM_UFFD_CTX;
+ vma->vm_flags &= ~(VM_UFFD_WP | VM_UFFD_MISSING);
+ }
up_write(&mm->mmap_sem);
userfaultfd_ctx_put(release_new_ctx);
_