linux-fslc-imx-rt: Add patch to support external imx-gpu-viv driver

Export functions swait_prepare_locked() and swait_finish_locked() to
make them available to the external imx-gpu-viv driver module.

Remove the check whether MACHINE_USES_VIVANTE_KERNEL_DRIVER_MODULE is
set; both the built-in driver and the external module now work with the
RT kernel.

Signed-off-by: Dominic Sacré <dominic.sacre@gmx.de>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 31 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-fslc-imx-rt/0004-export-swait-locked-functions.patch b/recipes-kernel/linux/linux-fslc-imx-rt/0004-export-swait-locked-functions.patch
new file mode 100644
index 00000000..1a616aa3
--- /dev/null
+++ b/recipes-kernel/linux/linux-fslc-imx-rt/0004-export-swait-locked-functions.patch
@@ -0,0 +1,31 @@
+From 2460dd985b0cf477f74396de92d1bc5df496abdc Mon Sep 17 00:00:00 2001
+From: Julio Cruz <jcsistemas2001@gmail.com>
+Date: Wed, 20 Jan 2016 19:26:44 +0800
+Subject: [PATCH] Export symbols for iMX-GPU-VIV module
+
+---
+ kernel/sched/wait-simple.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/kernel/sched/wait-simple.c b/kernel/sched/wait-simple.c
+index 7dfa86d..a3776ee 100644
+--- a/kernel/sched/wait-simple.c
++++ b/kernel/sched/wait-simple.c
+@@ -40,6 +40,7 @@ void swait_prepare_locked(struct swait_head *head, struct swaiter *w)
+        if (list_empty(&w->node))
+                __swait_enqueue(head, w);
+ }
++EXPORT_SYMBOL(swait_prepare_locked);
+ 
+ void swait_prepare(struct swait_head *head, struct swaiter *w, int state)
+ {
+@@ -58,6 +59,7 @@ void swait_finish_locked(struct swait_head *head, struct swaiter *w)
+        if (w->task)
+                __swait_dequeue(w);
+ }
++EXPORT_SYMBOL(swait_finish_locked);
+ 
+ void swait_finish(struct swait_head *head, struct swaiter *w)
+ {
+-- 
+2.1.0