[PATCHv2 5/7] gpu: host1x: Fix memory access in syncpt request

[Arto Merilainen]

This patch fixes a bad memory access in syncpoint request code. If
no syncpoints were available, the code accessed unreserved memory
area causing unexpected behaviour.

Signed-off-by: Arto Merilainen <amerilainen at nvidia.com>
---
 drivers/gpu/host1x/syncpt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index 4b49345..2b03f1b 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -40,7 +40,8 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
 
 	for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
 		;
-	if (sp->dev)
+
+	if (i >= host->info->nb_pts)
 		return NULL;
 
 	name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id,
-- 
1.8.1.5