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authorHeikki Krogerus <ext-heikki.krogerus@nokia.com>2010-09-24 13:44:13 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2010-10-22 10:21:55 -0700
commita6038ee76a29ea31f8aae4eb6c419794c739e077 (patch)
tree5b546af852401f7ff8f7947799fae02af8a610a9 /drivers/usb/musb
parent434678685407e045ffb246df059c486fc0a16e75 (diff)
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@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_core.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index d4f18bbc8f8..472b2a7e789 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