On Wed, Sep 22, 2010 at 01:06:56PM +0200, ext Felipe Balbi wrote:
> here's in diff form:
>
> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
> index d4f18bb..b7d97ac 100644
> --- a/drivers/usb/musb/musb_core.c
> +++ b/drivers/usb/musb/musb_core.c
> @@ -552,6 +552,9 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
>
> DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(musb));
>
> + if (devctl & MUSB_DEVCTL_BDEVICE)
> + return;
> +
> /* IRQ arrives from ID pin sense or (later, if VBUS power
> * is removed) SRP. responses are time critical:
> * - turn on VBUS (with silicon-specific mechanism)
Tested it and it Works fine. Thanks.
--
heikki
>From 419cc385ab3fa75c419f6766ea0dc6597e7dad92 Mon Sep 17 00:00:00 2001
From: Heikki Krogerus <ext-heikki.krogerus@xxxxxxxxx>
Date: Thu, 9 Sep 2010 16:55:21 +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 <ext-heikki.krogerus@xxxxxxxxx>
---
drivers/usb/musb/musb_core.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 540c766..4def45d 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
--
1.7.0.4
