summaryrefslogtreecommitdiffstats
path: root/drivers/usb/musb
diff options
context:
space:
mode:
authorGeorge Cherian <george.cherian@ti.com>2014-11-14 13:54:46 +0530
committerFelipe Balbi <balbi@ti.com>2014-11-18 09:55:31 -0600
commitf905bc68833b37b2274dc269fd35edb19e67aed7 (patch)
treecd18f9829ac8dc22fa94962d498ee863a04e89f7 /drivers/usb/musb
parent1eec34e9f25664cf71e05321329d128e0565beae (diff)
downloadblackbird-op-linux-f905bc68833b37b2274dc269fd35edb19e67aed7.tar.gz
blackbird-op-linux-f905bc68833b37b2274dc269fd35edb19e67aed7.zip
usb: musb: core: Disable the Interrupts till BABBLE is fully handled
Disable the MUSB interrupts till MUSB is recovered fully from BABBLE condition. There are chances that we could get multiple interrupts till the time the babble recover work gets scheduled. Sometimes this could even end up in an endless loop making MUSB itself unusable. Reported-by: Felipe Balbi <balbi@ti.com> Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_core.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f1dfe53515fb..5257928425ce 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -423,6 +423,7 @@ void musb_hnp_stop(struct musb *musb)
musb->port1_status &= ~(USB_PORT_STAT_C_CONNECTION << 16);
}
+static void musb_generic_disable(struct musb *musb);
/*
* Interrupt Service Routine to record USB "global" interrupts.
* Since these do not happen often and signify things of
@@ -846,9 +847,11 @@ b_host:
}
/* handle babble condition */
- if (int_usb & MUSB_INTR_BABBLE && is_host_active(musb))
+ if (int_usb & MUSB_INTR_BABBLE && is_host_active(musb)) {
+ musb_generic_disable(musb);
schedule_delayed_work(&musb->recover_work,
msecs_to_jiffies(100));
+ }
#if 0
/* REVISIT ... this would be for multiplexing periodic endpoints, or
OpenPOWER on IntegriCloud