xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: chipidea: fix nobody cared IRQ when booting with host role

Browse Source 
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>
This commit is contained in:
Peter Chen
2013-12-05 15:20:50 +08:00
committed by Greg Kroah-Hartman
parent cc5c9eb67f
commit 5a1e1456fc
2 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/usb/chipidea/udc.c
View File

@@ -1795,9 +1795,6 @@ static int udc_start(struct ci_hdrc *ci)
pm_runtime_no_callbacks(&ci->gadget.dev);
pm_runtime_enable(&ci->gadget.dev);
/* Update ci->vbus_active */
ci_handle_vbus_change(ci);
return retval;
destroy_eps: