diff options
| author | Peter Chen <peter.chen@freescale.com> | 2013-08-14 11:44:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-14 21:37:19 +0200 |
| commit | d66895f9df6b880fa3a280f5bdfe919169ca37dd (patch) | |
| tree | 5ac0d7006b43cfa36f569cfaa59033fb8a0ebbcd | |
| parent | usb: chipidea: host: add vbus regulator control (diff) | |
| download | linux-d66895f9df6b880fa3a280f5bdfe919169ca37dd.tar.xz linux-d66895f9df6b880fa3a280f5bdfe919169ca37dd.zip | |
usb: chipidea: udc: otg_set_peripheral is useless for some chipidea users
It is useless at below cases:
- If we implement both usb host and device at chipidea driver.
- If we don't need phy->otg.
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index e475fcda1d68..116c76203884 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1805,7 +1805,12 @@ static int udc_start(struct ci_hdrc *ci) if (ci->transceiver) { retval = otg_set_peripheral(ci->transceiver->otg, &ci->gadget); - if (retval) + /* + * If we implement all USB functions using chipidea drivers, + * it doesn't need to call above API, meanwhile, if we only + * use gadget function, calling above API is useless. + */ + if (retval && retval != -ENOTSUPP) goto put_transceiver; } |