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usb: musb: ignore spurious SESSREQ interrupts

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This will ignore any SESSREQ interrupt if musb is B state.
Charger detection may cause spurious SESSREQ interrupts.

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Heikki Krogerus 2010-09-24 13:44:13 +03:00 committed by Greg Kroah-Hartman
parent 4346786854
commit a6038ee76a
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/musb/musb_core.c
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@ -550,6 +550,11 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
if (int_usb & MUSB_INTR_SESSREQ) {
void __iomem *mbase = musb->mregs;
if (devctl & MUSB_DEVCTL_BDEVICE) {
DBG(3, "SessReq while on B state\n");
return IRQ_HANDLED;
}
DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(musb));
/* IRQ arrives from ID pin sense or (later, if VBUS power