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-rw-r--r--hid-tmff2.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/hid-tmff2.c b/hid-tmff2.c
index 869bdb1..34680ff 100644
--- a/hid-tmff2.c
+++ b/hid-tmff2.c
@@ -22,6 +22,7 @@
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/fixp-arith.h>
#define USB_VENDOR_ID_THRUSTMASTER 0x044f
@@ -368,7 +369,8 @@ static int tmff_play(struct input_dev *dev, void *data,
x = 256 - (x - 128);
}
- send_buf[5] = x;
+ x = (x * fixp_sin16(effect->direction * 360 / 0x10000)) / 0x7fff;
+ send_buf[5] = x;
}