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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-12-02 11:50:26 +0100 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-12-04 12:32:04 +0100 |
commit | 011f2c26f1b62e309f2eac6a3101bfe0a3c76c7e (patch) | |
tree | be53d4f11f7625508ee3aea9889e854ab5b5f263 /target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch | |
parent | 4257f6548b9480cdb436115b63d5c134c5e91303 (diff) | |
download | upstream-011f2c26f1b62e309f2eac6a3101bfe0a3c76c7e.tar.gz upstream-011f2c26f1b62e309f2eac6a3101bfe0a3c76c7e.tar.bz2 upstream-011f2c26f1b62e309f2eac6a3101bfe0a3c76c7e.zip |
brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch b/target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch new file mode 100644 index 0000000000..e63ae4ddcb --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0460-drm-vc4-Return-EBUSY-if-there-s-already-a-pending-fl.patch @@ -0,0 +1,44 @@ +From 78dd826ec156f24ee345f58cb6ba2b0efe478595 Mon Sep 17 00:00:00 2001 +From: Robert Foss <robert.foss@collabora.com> +Date: Tue, 3 May 2016 13:48:20 -0400 +Subject: [PATCH] drm/vc4: Return -EBUSY if there's already a pending flip + event. + +As per the documentation in drm_crtc.h, atomic_commit should return +-EBUSY if an asynchronous update is requested and there is an earlier +update pending. + +v2: Rebase on the s/async/nonblock/ change. + +Signed-off-by: Robert Foss <robert.foss@collabora.com> +Reviewed-by: Eric Anholt <eric@anholt.net> +(cherry picked from commit e7c31f6f25b84fed961dc0dce6248878527693ae) +--- + drivers/gpu/drm/vc4/vc4_kms.c | 16 ++++++++++++---- + 1 file changed, 12 insertions(+), 4 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -119,10 +119,18 @@ static int vc4_atomic_commit(struct drm_ + return -ENOMEM; + + /* Make sure that any outstanding modesets have finished. */ +- ret = down_interruptible(&vc4->async_modeset); +- if (ret) { +- kfree(c); +- return ret; ++ if (nonblock) { ++ ret = down_trylock(&vc4->async_modeset); ++ if (ret) { ++ kfree(c); ++ return -EBUSY; ++ } ++ } else { ++ ret = down_interruptible(&vc4->async_modeset); ++ if (ret) { ++ kfree(c); ++ return ret; ++ } + } + + ret = drm_atomic_helper_prepare_planes(dev, state); |