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USB: musb: resume suspended root hub on disconnect

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If this is not done, khubd will not be informed of the disconnect
and will assume the device is still there.

Easily seen when a hub is connected with no device attached to it;
it will autosuspend.  When the hub is disconnected, it still shows
up in /proc/bus/usb/devices

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Anand Gadiyar 2009-02-21 15:31:40 -08:00 committed by Greg Kroah-Hartman
parent 136733d612
commit 5c23c9078f
1 changed files with 1 additions and 0 deletions
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drivers/usb/musb/musb_core.c
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@ -767,6 +767,7 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb,
#ifdef CONFIG_USB_MUSB_HDRC_HCD
case OTG_STATE_A_HOST:
case OTG_STATE_A_SUSPEND:
usb_hcd_resume_root_hub(musb_to_hcd(musb));
musb_root_disconnect(musb);
if (musb->a_wait_bcon != 0)
musb_platform_try_idle(musb, jiffies