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authorDmitry Osipenko <digetx@gmail.com>2017-06-15 02:18:25 +0300
committerThierry Reding <treding@nvidia.com>2017-06-15 14:12:25 +0200
commitd6c153ec85856f5ad29adc20739ec28edeb7c042 (patch)
tree4dc6b2ff3516ed510f883dd12e422c63af192b45 /drivers/gpu/drm
parent1066a8959d04785b9d2e9cbb91aaef922b710c4a (diff)
downloadlinux-stericsson-d6c153ec85856f5ad29adc20739ec28edeb7c042.tar.gz
drm/tegra: Correct idr_alloc() minimum id
The client ID 0 is reserved by the host1x/cdma to mark the timeout timer work as already been scheduled and context ID is used as the clients one. This fixes spurious CDMA timeouts. Fixes: bdd2f9cd10eb ("drm/tegra: Don't leak kernel pointer to userspace") Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: http://patchwork.freedesktop.org/patch/msgid/9c19a44219acd988e678cf9abe21363911184625.1497480754.git.digetx@gmail.com
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/tegra/drm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index fefa715c4315..81f86a67c10d 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -539,7 +539,7 @@ static int tegra_client_open(struct tegra_drm_file *fpriv,
if (err < 0)
return err;
- err = idr_alloc(&fpriv->contexts, context, 0, 0, GFP_KERNEL);
+ err = idr_alloc(&fpriv->contexts, context, 1, 0, GFP_KERNEL);
if (err < 0) {
client->ops->close_channel(context);
return err;