From 66628a4cf133e2a01622c22411509e7a4df6722b Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Wed, 21 Sep 2016 14:23:48 -0300
Subject: [PATCH] aerofc: forbid gpio changes

We export an "empty" table, but there's no protection when doing
ioctl().
---
 src/drivers/px4fmu/fmu.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/drivers/px4fmu/fmu.cpp b/src/drivers/px4fmu/fmu.cpp
index ed82756f5b..b513a7d413 100644
--- a/src/drivers/px4fmu/fmu.cpp
+++ b/src/drivers/px4fmu/fmu.cpp
@@ -2560,7 +2560,11 @@ PX4FMU::gpio_ioctl(struct file *filp, int cmd, unsigned long arg)
 	case GPIO_SET_OUTPUT_HIGH:
 	case GPIO_SET_INPUT:
 	case GPIO_SET_ALT_1:
+#ifdef CONFIG_ARCH_BOARD_AEROFC_V1
+		ret = -EINVAL;
+#else
 		gpio_set_function(arg, cmd);
+#endif
 		break;
 
 	case GPIO_SET_ALT_2:
@@ -2571,11 +2575,19 @@ PX4FMU::gpio_ioctl(struct file *filp, int cmd, unsigned long arg)
 
 	case GPIO_SET:
 	case GPIO_CLEAR:
+#ifdef CONFIG_ARCH_BOARD_AEROFC_V1
+		ret = -EINVAL;
+#else
 		gpio_write(arg, cmd);
+#endif
 		break;
 
 	case GPIO_GET:
+#ifdef CONFIG_ARCH_BOARD_AEROFC_V1
+		ret = -EINVAL;
+#else
 		*(uint32_t *)arg = gpio_read();
+#endif
 		break;
 
 	default: