diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0197-drm-vc4-Fix-ERESTARTSYS-error-return-from-BO-waits.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0197-drm-vc4-Fix-ERESTARTSYS-error-return-from-BO-waits.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0197-drm-vc4-Fix-ERESTARTSYS-error-return-from-BO-waits.patch b/target/linux/brcm2708/patches-4.4/0197-drm-vc4-Fix-ERESTARTSYS-error-return-from-BO-waits.patch new file mode 100644 index 0000000000..0a131996fe --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0197-drm-vc4-Fix-ERESTARTSYS-error-return-from-BO-waits.patch @@ -0,0 +1,32 @@ +From 516e9685df7152891b08710c8722cbfe5257b8b9 Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Mon, 25 Jan 2016 14:32:41 -0800 +Subject: [PATCH 197/304] drm/vc4: Fix -ERESTARTSYS error return from BO waits. + +This caused the wait ioctls to claim that waiting had completed when +we actually got interrupted by a signal before it was done. Fixes +broken rendering throttling that produced serious lag in X window +dragging. + +Signed-off-by: Eric Anholt <eric@anholt.net> +--- + drivers/gpu/drm/vc4/vc4_gem.c | 6 ++---- + 1 file changed, 2 insertions(+), 4 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_gem.c ++++ b/drivers/gpu/drm/vc4/vc4_gem.c +@@ -352,12 +352,10 @@ vc4_wait_for_seqno(struct drm_device *de + finish_wait(&vc4->job_wait_queue, &wait); + trace_vc4_wait_for_seqno_end(dev, seqno); + +- if (ret && ret != -ERESTARTSYS) { ++ if (ret && ret != -ERESTARTSYS) + DRM_ERROR("timeout waiting for render thread idle\n"); +- return ret; +- } + +- return 0; ++ return ret; + } + + static void |