On Wednesday 14 of May 2014 11:14:02 Dmitry Torokhov wrote:

On Sat, Apr 26, 2014 at 05:02:00PM +0200, Michal Malý wrote:

quoted

+
+/** input_ff_create_mlnx() - Register a device within ff-memless-next and
+ *                           the kernel force feedback system
+ * @dev: Pointer to the struct input_dev associated with the device.
+ * @data: Any device-specific data that shall be passed to the callback.
+ *        function called by ff-memless-next when a force feedback action
+ *        shall be performed.
+ * @control_effect: Pointer to the callback function.
+ * @update_date: Delay in milliseconds between two recalculations of
periodic + *               effects, ramp effects and envelopes. Note that
this value will + *               never be lower than (CONFIG_HZ / 1000)
+ 1 regardless of the + *               value specified here. This is not
a "hard" rate limiter. + *               Userspace still can submit
effects at a rate faster than + *               this value.

The update rate change seems useful whether we use new ff implementation
or enhance the old one but I would prefer having a separate call to
control it.

OK, that should not be a problem. Please note that the plan is to use this 
value to do proper "hard" rate limiting in the future.
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