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USB: Add a missing NULL check in Hub constructor.

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This case is probably very rare, though.
This commit is contained in:
Augustin Cavalier
2024-11-12 21:52:02 -05:00
parent 8500b11c43
commit 75a4dfe4a1
1 changed files with 3 additions and 2 deletions
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src/add-ons/kernel/bus_managers/usb/Hub.cpp
+3 -2
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@@ -69,14 +69,15 @@ Hub::Hub(Object *parent, int8 hubAddress, uint8 hubPort,
usb_interface_list *list = Configuration()->interface; usb_interface_list *list = Configuration()->interface;
Object *object = GetStack()->GetObject(list->active->endpoint[0].handle); Object *object = GetStack()->GetObject(list->active->endpoint[0].handle);
if (object && (object->Type() & USB_OBJECT_INTERRUPT_PIPE) != 0) { if (object != NULL && (object->Type() & USB_OBJECT_INTERRUPT_PIPE) != 0) {
fInterruptPipe = (InterruptPipe *)object; fInterruptPipe = (InterruptPipe *)object;
fInterruptPipe->QueueInterrupt(fInterruptStatus, fInterruptPipe->QueueInterrupt(fInterruptStatus,
sizeof(fInterruptStatus), InterruptCallback, this); sizeof(fInterruptStatus), InterruptCallback, this);
} else { } else {
TRACE_ALWAYS("no interrupt pipe found\n"); TRACE_ALWAYS("no interrupt pipe found\n");
} }
object->ReleaseReference(); if (object != NULL)
object->ReleaseReference();
// Wait some time before powering up the ports // Wait some time before powering up the ports
if (!isRootHub) if (!isRootHub)