dinput: Handle case where IOHIDDeviceGetValue fails.

This prevents crashes if a controller disconnects from OS/X. Signed-off-by: Aric Stewart <aric@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dinput: Handle case where IOHIDDeviceGetValue fails.
c5283300 · Aric Stewart · Alexandre Julliard · 620da60f · c5283300
Commit c5283300 authored Jun 04, 2019 by Aric Stewart Committed by Alexandre Julliard Jun 04, 2019
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Showing with 15 additions and 3 deletions

joystick_osx.c dlls/dinput/joystick_osx.c +15 -3

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--- a/dlls/dinput/joystick_osx.c
+++ b/dlls/dinput/joystick_osx.c
@@ -801,7 +801,11 @@ static void poll_osx_device_state(LPDIRECTINPUTDEVICE8A iface)
                    TRACE("kIOHIDElementTypeInput_Button\n");
                    if(button_idx < 128)
                    {
-                        IOHIDDeviceGetValue(hid_device, element, &valueRef);
+                        valueRef = NULL;
+                        if (IOHIDDeviceGetValue(hid_device, element, &valueRef) != kIOReturnSuccess)
+                            return;
+                        if (valueRef == NULL)
+                            return;
                        val = IOHIDValueGetIntegerValue(valueRef);
                        newVal = val ? 0x80 : 0x0;
                        oldVal = device->generic.js.rgbButtons[button_idx];
@@ -823,7 +827,11 @@ static void poll_osx_device_state(LPDIRECTINPUTDEVICE8A iface)
                        case kHIDUsage_GD_Hatswitch:
                        {
                            TRACE("kIOHIDElementTypeInput_Misc / kHIDUsage_GD_Hatswitch\n");
-                            IOHIDDeviceGetValue(hid_device, element, &valueRef);
+                            valueRef = NULL;
+                            if (IOHIDDeviceGetValue(hid_device, element, &valueRef) != kIOReturnSuccess)
+                                return;
+                            if (valueRef == NULL)
+                                return;
                            val = IOHIDValueGetIntegerValue(valueRef);
                            oldVal = device->generic.js.rgdwPOV[pov_idx];
                            if (val >= 8)
@@ -850,7 +858,11 @@ static void poll_osx_device_state(LPDIRECTINPUTDEVICE8A iface)
                        {
                            int wine_obj = -1;
-                            IOHIDDeviceGetValue(hid_device, element, &valueRef);
+                            valueRef = NULL;
+                            if (IOHIDDeviceGetValue(hid_device, element, &valueRef) != kIOReturnSuccess)
+                                return;
+                            if (valueRef == NULL)
+                                return;
                            val = IOHIDValueGetIntegerValue(valueRef);
                            newVal = joystick_map_axis(&device->generic.props[idx], val);
                            switch (usage)