From a6038ee76a29ea31f8aae4eb6c419794c739e077 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 24 Sep 2010 13:44:13 +0300 Subject: [PATCH] usb: musb: ignore spurious SESSREQ interrupts This will ignore any SESSREQ interrupt if musb is B state. Charger detection may cause spurious SESSREQ interrupts. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index d4f18bbc8f8f..472b2a7e7896 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -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 -- 2.20.1