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Detach all children before beginning to tear down the hardware, instead of

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doing it last.  Also, remove the local tracking of whether usb's busdma
memory allocation got done, because it's safe to call the free_all
function even if it wasn't.
This commit is contained in:
ian 2018-07-05 16:00:58 +00:00
parent 8dceda29e8
commit 00c8d880f9
1 changed files with 6 additions and 9 deletions
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15
sys/dev/usb/controller/ehci_imx.c
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@ -268,7 +268,6 @@ struct imx_ehci_softc {
device_t dev;
struct resource *ehci_mem_res; /* EHCI core regs. */
struct resource *ehci_irq_res; /* EHCI core IRQ. */
bool usb_mem_allocated;
};
static struct ofw_compat_data compat_data[] = {
@ -313,13 +312,16 @@ imx_ehci_detach(device_t dev)
{
struct imx_ehci_softc *sc;
ehci_softc_t *esc;
int err;
sc = device_get_softc(dev);
esc = &sc->ehci_softc;
if (esc->sc_bus.bdev != NULL)
device_delete_child(dev, esc->sc_bus.bdev);
/* First detach all children; we can't detach if that fails. */
if ((err = device_delete_children(dev)) != 0)
return (err);
if (esc->sc_flags & EHCI_SCFLG_DONEINIT)
ehci_detach(esc);
if (esc->sc_intr_hdl != NULL)
@ -332,11 +334,7 @@ imx_ehci_detach(device_t dev)
bus_release_resource(dev, SYS_RES_MEMORY, 0,
sc->ehci_mem_res);
if (sc->usb_mem_allocated)
usb_bus_mem_free_all(&esc->sc_bus, &ehci_iterate_hw_softc);
/* During module unload there are lots of children leftover */
device_delete_children(dev);
usb_bus_mem_free_all(&esc->sc_bus, &ehci_iterate_hw_softc);
return (0);
}
@ -415,7 +413,6 @@ imx_ehci_attach(device_t dev)
err = ENOMEM;
goto out;
}
sc->usb_mem_allocated = true;
/*
* Set handle to USB related registers subregion used by