]> git.baikalelectronics.ru Git - kernel.git/commit
usb: musb: da8xx: fix babble condition handling
authorBin Liu <b-liu@ti.com>
Tue, 5 Dec 2017 14:45:30 +0000 (08:45 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 8 Dec 2017 16:31:20 +0000 (17:31 +0100)
commitbd3486ded7a0c313a6575343e6c2b21d14476645
tree0b4c5720898f66ca2ffc011484b8029ea75ce7ac
parent6b0b3bda3d77c35fa9cf20067c0b62daff98c042
usb: musb: da8xx: fix babble condition handling

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.

Cc: stable@vger.kernel.org # v3.16+
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/musb/da8xx.c