usb: musb: da8xx: fix babble condition handling

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commit bd3486ded7 upstream.

When babble condition happens, the musb controller might automatically
turns off VBUS. On DA8xx platform, the controller generates drvvbus
interrupt for turning off VBUS along with the babble interrupt.

In this case, we should handle the babble interrupt first and recover
from the babble condition.

This change ignores the drvvbus interrupt if babble interrupt is also
generated at the same time, so the babble recovery routine works
properly.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Bin Liu 2017-12-05 08:45:30 -06:00 • committed by Ben Hutchings

parent 056112f96b

commit dc3d2b2efd

1 changed files with 9 additions and 1 deletions

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drivers/usb/musb/da8xx.c

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