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HID: magicmouse: properly account for scroll movement in state
Before this change, sequential scroll events would take a variable amount of movement due to incorrect accounting. This change ensures all scroll movements require a deterministic touch movement for an action to occur. Signed-off-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Michael Poole <mdpoole@troilus.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -189,7 +189,8 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda
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case TOUCH_STATE_DRAG:
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step = step / accel_profile[msc->scroll_accel];
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if (step != 0) {
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msc->touches[id].scroll_y = y;
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msc->touches[id].scroll_y -=
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step * accel_profile[msc->scroll_accel];
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msc->scroll_jiffies = now;
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input_report_rel(input, REL_WHEEL, step);
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}
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