They are however two distinct bugs and should be fixed separately. Could
you split the fixes into two patches and resubmit?
Please also include a more descriptive subject line for each patch, for
example:
"USB: usb_wwan: fix urb leak in write error path"
"USB: usb_wwan: fix race between write and resume"
You should probably point out that the write-resume race could also lead
to writes being reordered in the description of that patch.