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usb: chipidea: udc: .pullup is valid only when vbus is there 

For chipidea, the IP must know vbus before the controller
begins to run. So the .pullup should only be called when
the vbus is there.

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>
This commit is contained in:
Peter Chen 2013-08-14 12:44:15 +03:00 committed by Greg Kroah-Hartman
parent d268e9bc23
commit 4a64783b66
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/chipidea/udc.c
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@ -1511,6 +1511,9 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
if (!ci->vbus_active)
return -EOPNOTSUPP;
if (is_on)
hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
else