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usb: add hostdevice property to usb-host

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The new property allows to specify usb host device name.  Uses standard
qemu_open(), so both file system path (/dev/bus/usb/$bus/$dev on linux)
and file descriptor passing can be used.

Requires libusb 1.0.23 or newer.  The hostdevice property is only
present in case qemu is compiled against a new enough library version,
so the presence of the property can be used for feature detection.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200605125952.13113-1-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2020-06-05 14:59:52 +02:00
parent 5c24bce305
commit 9f815e83e9
2 changed files with 62 additions and 14 deletions
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1
hw/usb/trace-events
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@ -291,6 +291,7 @@ usb_mtp_file_monitor_event(int dev, const char *path, const char *s) "dev %d, pa
# host-libusb.c
usb_host_open_started(int bus, int addr) "dev %d:%d"
usb_host_open_hostfd(int hostfd) "hostfd %d"
usb_host_open_success(int bus, int addr) "dev %d:%d"
usb_host_open_failure(int bus, int addr) "dev %d:%d"
usb_host_close(int bus, int addr) "dev %d:%d"