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usb_midi: fix KDL when there is no in or out endpoint

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usb_midi devices can be input-only or output-only. We failed to check
for this in some places leading to KDL on devices that are not
bidirectional.

Should fix #11810.
This commit is contained in:
Adrien Destugues
2015-02-02 08:56:40 +01:00
parent ed00de38d9
commit 578e26c0d3
1 changed files with 14 additions and 9 deletions
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src/add-ons/kernel/drivers/midi/usb_midi/usb_midi.cpp
+14 -9
View File
@@ -431,13 +431,15 @@ got_one:
}
/* issue bulk transfer */
DPRINTF_DEBUG((MY_ID "queueing bulk xfer IN endpoint\n"));
status = usb->queue_bulk(midiDevice->ept_in->handle, midiDevice->buffer,
midiDevice->inMaxPkt,
(usb_callback_func)midi_usb_read_callback, midiDevice);
if (status != B_OK) {
DPRINTF_ERR((MY_ID "queue_bulk() error 0x%" B_PRIx32 "\n", status));
return B_ERROR;
if (midiDevice->ept_in != NULL) {
DPRINTF_DEBUG((MY_ID "queueing bulk xfer IN endpoint\n"));
status = usb->queue_bulk(midiDevice->ept_in->handle, midiDevice->buffer,
midiDevice->inMaxPkt,
(usb_callback_func)midi_usb_read_callback, midiDevice);
if (status != B_OK) {
DPRINTF_ERR((MY_ID "queue_bulk() error 0x%" B_PRIx32 "\n", status));
return B_ERROR;
}
}
*cookie = midiDevice;
@@ -471,8 +473,11 @@ usb_midi_removed(void* cookie)
}
remove_port(port);
}
usb->cancel_queued_transfers(midiDevice->ept_in->handle);
usb->cancel_queued_transfers(midiDevice->ept_out->handle);
if (midiDevice->ept_in != NULL)
usb->cancel_queued_transfers(midiDevice->ept_in->handle);
if (midiDevice->ept_out != NULL)
usb->cancel_queued_transfers(midiDevice->ept_out->handle);
DPRINTF_DEBUG((MY_ID "usb_midi_removed: doing remove: %s\n",
midiDevice->name));
remove_device(midiDevice);