1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0503-raspberrypi-firmware-Export-the-general-transaction-.patch b/target/linux/brcm2708/patches-4.4/0503-raspberrypi-firmware-Export-the-general-transaction-.patch
new file mode 100644
index 0000000000..5e33a50927
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0503-raspberrypi-firmware-Export-the-general-transaction-.patch
@@ -0,0 +1,42 @@
+From d80f8d5336690bb4b8ee3b5b374d63062ca2a1cc Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Wed, 14 Sep 2016 09:16:19 +0100
+Subject: [PATCH] raspberrypi-firmware: Export the general transaction
+ function.
+
+The vc4-firmware-kms module is going to be doing the MBOX FB call.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/firmware/raspberrypi.c             | 3 ++-
+ include/soc/bcm2835/raspberrypi-firmware.h | 1 +
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -42,7 +42,7 @@ static void response_callback(struct mbo
+  * Sends a request to the firmware through the BCM2835 mailbox driver,
+  * and synchronously waits for the reply.
+  */
+-static int
++int
+ rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data)
+ {
+ 	u32 message = MBOX_MSG(chan, data);
+@@ -63,6 +63,7 @@ rpi_firmware_transaction(struct rpi_firm
+ 
+ 	return ret;
+ }
++EXPORT_SYMBOL_GPL(rpi_firmware_transaction);
+ 
+ /**
+  * rpi_firmware_property_list - Submit firmware property list
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -129,5 +129,6 @@ int rpi_firmware_property(struct rpi_fir
+ int rpi_firmware_property_list(struct rpi_firmware *fw,
+ 			       void *data, size_t tag_size);
+ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
++int rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data);
+ 
+ #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */