Hi
On Fri, Jan 31, 2014 at 2:03 PM, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> Don't just increment the LED device number, but use the joystick id so
> that you have a chance to associate the LED device to the correct xpad
> device by the name, instead of having to use the sysfs tree, which
> really doesn't work.
>
> Cc: "Pierre-Loup A. Griffais" <pgriffais@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/input/joystick/xpad.c | 40 +++++++++++++++++-----------------------
> 1 file changed, 17 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
> index d342d41a7a0d..ae156de46a12 100644
> --- a/drivers/input/joystick/xpad.c
> +++ b/drivers/input/joystick/xpad.c
> @@ -781,8 +781,6 @@ static void xpad_led_set(struct led_classdev *led_cdev,
>
> static int xpad_led_probe(struct usb_xpad *xpad)
> {
> - static atomic_t led_seq = ATOMIC_INIT(0);
> - long led_no;
> struct xpad_led *led;
> struct led_classdev *led_cdev;
> int error;
> @@ -794,9 +792,7 @@ static int xpad_led_probe(struct usb_xpad *xpad)
> if (!led)
> return -ENOMEM;
>
> - led_no = (long)atomic_inc_return(&led_seq) - 1;
> -
> - snprintf(led->name, sizeof(led->name), "xpad%ld", led_no);
> + snprintf(led->name, sizeof(led->name), "xpad%d", xpad->joydev_id);
I guess that patch should be dropped, too?
Why not use the usb-interface here? It's quite common to use bt-mac
addresses for BT devices, so something similar for USB seems fine to
me.
Thanks
David
> led->xpad = xpad;
>
> led_cdev = &led->led_cdev;
> @@ -944,16 +940,17 @@ static int xpad_init_input(struct usb_xpad *xpad)
> }
>
> error = xpad_init_ff(xpad);
> - if (error)
> - goto fail_init_ff;
> -
> - error = xpad_led_probe(xpad);
> - if (error)
> - goto fail_init_led;
> + if (error) {
> + input_free_device(input_dev);
> + return error;
> + }
>
> error = input_register_device(xpad->dev);
> - if (error)
> - goto fail_input_register;
> + if (error) {
> + input_ff_destroy(input_dev);
> + input_free_device(input_dev);
> + return error;
> + }
>
> joydev_dev = device_find_child(&xpad->dev->dev, NULL,
> xpad_find_joydev);
> @@ -966,17 +963,14 @@ static int xpad_init_input(struct usb_xpad *xpad)
> xpad_send_led_command(xpad, (xpad->joydev_id % 4) + 2);
> }
>
> - return 0;
> -
> -fail_input_register:
> - xpad_led_disconnect(xpad);
> -
> -fail_init_led:
> - input_ff_destroy(input_dev);
> + error = xpad_led_probe(xpad);
> + if (error) {
> + input_ff_destroy(input_dev);
> + input_unregister_device(input_dev);
> + return error;
> + }
>
> -fail_init_ff:
> - input_free_device(input_dev);
> - return error;
> + return 0;
> }
>
> static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
> --
> 1.8.5.3
>
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