diff options
| author | Peter Chen <peter.chen@freescale.com> | 2013-12-05 11:20:50 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-10 01:14:12 +0400 |
| commit | 5a1e1456fc633da5291285b1fff75d2a7507375b (patch) | |
| tree | 7d1c4a17d4fcc05f50efebaf7d3f0934c34b0dd5 /drivers/usb/chipidea/core.c | |
| parent | cc5c9eb67f912cb2c349b04063ff9f444affbc59 (diff) | |
| download | linux-5a1e1456fc633da5291285b1fff75d2a7507375b.tar.xz | |
usb: chipidea: fix nobody cared IRQ when booting with host role
If we connect Male-A-To-Male-A cable between otg-host and host pc,
the ci->vbus_active is set wrongly, and cause the controller run
at peripheral mode when we load gadget module (ci_udc_start will be run),
but the software runs at host mode due to id = 0. The ehci_irq
can't handle suspend (USBi_SLI) interrupt which is enabled for
peripheral mode, it causes no one will handle irq error.
This patch is needed for 3.12 stable
Cc: stable <stable@vger.kernel.org>
Acked-by: Michael Grzeschik <mgr@pengutronix.de>
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 5d8981c5235e..6e73f8cd60e5 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -642,6 +642,10 @@ static int ci_hdrc_probe(struct platform_device *pdev) : CI_ROLE_GADGET; } + /* only update vbus status for peripheral */ + if (ci->role == CI_ROLE_GADGET) + ci_handle_vbus_change(ci); + ret = ci_role_start(ci, ci->role); if (ret) { dev_err(dev, "can't start %s role\n", ci_role(ci)->name); |