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[zynq] Fix panic on USB PHY initialization failure

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The Zedboard has a hardware bug where initialization of the USB PHY
occasionally fails on boot-up. Fix regression in -CURRENT when
kernel panics on such occasion. 11-RELEASE branch works fine

PR:		215862
Submitted by:	Thomas Skibo <thoma555-bsd@yahoo.com>
This commit is contained in:
gonzo 2017-01-17 00:39:09 +00:00
parent 46e35adb66
commit 3905116042
1 changed files with 3 additions and 6 deletions
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9
sys/arm/xilinx/zy7_ehci.c
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@ -325,13 +325,10 @@ zy7_ehci_detach(device_t dev)
/* during module unload there are lots of children leftover */
device_delete_children(dev);
sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
if (sc->sc_irq_res && sc->sc_intr_hdl)
/* call ehci_detach() after ehci_init() called after
* successful bus_setup_intr().
*/
if ((sc->sc_flags & EHCI_SCFLG_DONEINIT) != 0) {
ehci_detach(sc);
sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
}
if (sc->sc_irq_res) {
if (sc->sc_intr_hdl != NULL)