diff options
| author | Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> | 2012-05-10 10:31:21 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 15:18:21 +0800 |
| commit | 658b069b7c6b5d91cd89a24dde34ec91918f6e25 (patch) | |
| tree | e6a56718eaffb05a88d7251f2684d42bbc373a11 /drivers/misc | |
| parent | ada3a3d0cb75f4cb015a2521badcffcf6d16ba45 (diff) | |
USB: gpio_vbus: provide an appropriate debounce interval
commit 934ccec4da14dc0586dfe08b36166364bdd2181b upstream.
In commit c2344f13b59e007d782a3e591ebc551bc583a8b7 (USB: gpio_vbus:
add delayed vbus_session calls, 2009-01-24), usb_gadget_vbus_connect()
and ...disconnect() were extracted from the interrupt handler, so to
allow vbus_session handlers to deal with msleep() calls.
This patch takes the approach one step further.
USB2.0 specification (7.1.7.3 Connect and Disconnect Signaling) says
that the USB system software (shall) provide a debounce interval with
a minimum duration of 100 ms, which ensures that the electrical and
mechanical connection is stable before software attempts to reset
the attached device.
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
0 files changed, 0 insertions, 0 deletions