27.01.2020 18:25, Peter Geis пишет:

On Mon, Jan 27, 2020 at 2:18 AM Greg KH [off-list ref] wrote:

quoted

On Sun, Jan 26, 2020 at 09:35:48PM -0500, Peter Geis wrote:

quoted

The ci_hdrc_tegra driver does not currently support dual role mode, but
it does not explicitly prevent its use.
Certain devices support dual role mode, but not automatic role switch.
This can cause the device to lock up during initialization of the
driver.

Detect this state by checking for the extcon phandle when dual role mode
is set to otg.
If it doesn't exist request the driver to only enable manual role
switching.

Fixes: dfebb5f ("usb: chipidea: Add support for Tegra20/30/114/124")

Please use 12 digits for kernel sha1 values, this should be:
Fixes: dfebb5f43a78 ("usb: chipidea: Add support for Tegra20/30/114/124")

Understood, thank you.
I will ensure that is the case in the future.

Please also take a look at the kernel's scripts/checkpatch.pl, running
'scripts/checkpatch.pl --strict path_to.patch' will help to catch such
things.