kernel: update kernel 4.9 to 4.9.17

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 0 insertions, 93 deletions

diff --git a/target/linux/brcm2708/patches-4.9/950-0166-drm-vc4-Fix-race-between-page-flip-completion-event-.patch b/target/linux/brcm2708/patches-4.9/950-0166-drm-vc4-Fix-race-between-page-flip-completion-event-.patch
deleted file mode 100644
index 3c66fefafd..0000000000
--- a/target/linux/brcm2708/patches-4.9/950-0166-drm-vc4-Fix-race-between-page-flip-completion-event-.patch
+++ /dev/null
@@ -1,93 +0,0 @@
-From d7f32f81cf7579ac7d13127db88e789ea864824c Mon Sep 17 00:00:00 2001
-From: Derek Foreman <derekf@osg.samsung.com>
-Date: Thu, 24 Nov 2016 12:11:55 -0600
-Subject: [PATCH] drm/vc4: Fix race between page flip completion event and
- clean-up
-
-There was a small window where a userspace program could submit
-a pageflip after receiving a pageflip completion event yet still
-receive EBUSY.
-
-Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
-Signed-off-by: Eric Anholt <eric@anholt.net>
-Reviewed-by: Eric Anholt <eric@anholt.net>
-Reviewed-by: Daniel Stone <daniels@collabora.com>
-(cherry picked from commit 26fc78f6fef39b9d7a15def5e7e9826ff68303f4)
----
- drivers/gpu/drm/vc4/vc4_crtc.c |  8 ++++++++
- drivers/gpu/drm/vc4/vc4_drv.h  |  1 +
- drivers/gpu/drm/vc4/vc4_kms.c  | 33 +++++++++++++++++++++++++--------
- 3 files changed, 34 insertions(+), 8 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_crtc.c
-+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
-@@ -682,6 +682,14 @@ void vc4_disable_vblank(struct drm_devic
- 	CRTC_WRITE(PV_INTEN, 0);
- }
- 
-+/* Must be called with the event lock held */
-+bool vc4_event_pending(struct drm_crtc *crtc)
-+{
-+	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
-+
-+	return !!vc4_crtc->event;
-+}
-+
- static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)
- {
- 	struct drm_crtc *crtc = &vc4_crtc->base;
---- a/drivers/gpu/drm/vc4/vc4_drv.h
-+++ b/drivers/gpu/drm/vc4/vc4_drv.h
-@@ -445,6 +445,7 @@ int vc4_bo_stats_debugfs(struct seq_file
- extern struct platform_driver vc4_crtc_driver;
- int vc4_enable_vblank(struct drm_device *dev, unsigned int crtc_id);
- void vc4_disable_vblank(struct drm_device *dev, unsigned int crtc_id);
-+bool vc4_event_pending(struct drm_crtc *crtc);
- int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg);
- int vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id,
- 			    unsigned int flags, int *vpos, int *hpos,
---- a/drivers/gpu/drm/vc4/vc4_kms.c
-+++ b/drivers/gpu/drm/vc4/vc4_kms.c
-@@ -119,17 +119,34 @@ static int vc4_atomic_commit(struct drm_
- 
- 	/* Make sure that any outstanding modesets have finished. */
- 	if (nonblock) {
--		ret = down_trylock(&vc4->async_modeset);
--		if (ret) {
-+		struct drm_crtc *crtc;
-+		struct drm_crtc_state *crtc_state;
-+		unsigned long flags;
-+		bool busy = false;
-+
-+		/*
-+		 * If there's an undispatched event to send then we're
-+		 * obviously still busy.  If there isn't, then we can
-+		 * unconditionally wait for the semaphore because it
-+		 * shouldn't be contended (for long).
-+		 *
-+		 * This is to prevent a race where queuing a new flip
-+		 * from userspace immediately on receipt of an event
-+		 * beats our clean-up and returns EBUSY.
-+		 */
-+		spin_lock_irqsave(&dev->event_lock, flags);
-+		for_each_crtc_in_state(state, crtc, crtc_state, i)
-+			busy |= vc4_event_pending(crtc);
-+		spin_unlock_irqrestore(&dev->event_lock, flags);
-+		if (busy) {
- 			kfree(c);
- 			return -EBUSY;
- 		}
--	} else {
--		ret = down_interruptible(&vc4->async_modeset);
--		if (ret) {
--			kfree(c);
--			return ret;
--		}
-+	}
-+	ret = down_interruptible(&vc4->async_modeset);
-+	if (ret) {
-+		kfree(c);
-+		return ret;
- 	}
- 
- 	ret = drm_atomic_helper_prepare_planes(dev, state);