diff options
| author | Bin Liu <b-liu@ti.com> | 2015-09-14 17:12:34 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-09-14 18:14:48 +0300 |
| commit | 40af177efc9385af15c49a40976f71e58e6af418 (patch) | |
| tree | 60ee28428201c16fb18e6acd17d808ac1476795c /drivers/usb/musb | |
| parent | e2ae0692bf6f71c8b841889b655d0dc08413e4e3 (diff) | |
| download | linux-40af177efc9385af15c49a40976f71e58e6af418.tar.xz | |
usb: musb: ensure in peripheral mode when checking session
The change ensures otg is not in a A- state when checking for VBUS in
peripheral mode.
musb_start() where VBUS checking is in can be called in many situations.
One example is in babble recovery routine, in which otg is transitioning
from A-HOST to A-WAIT-BCON, but VBUS discharge takes time, so
musb->is_active could be set to 1 due to this improper checking, then it
causes musb_bus_suspend() failed which leads to warning log message
flooding.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 514a6cdaeff6..d105c6dcbbec 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1051,6 +1051,7 @@ void musb_start(struct musb *musb) * (c) peripheral initiates, using SRP */ if (musb->port_mode != MUSB_PORT_MODE_HOST && + musb->xceiv->otg->state != OTG_STATE_A_WAIT_BCON && (devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) { musb->is_active = 1; } else { |