diff options
| author | Markus Armbruster <armbru@redhat.com> | 2015-03-23 19:34:40 +0100 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-04-02 15:30:44 +0200 |
| commit | 9f9bdf43cac28251f8cb33b77fed5e19225375c4 (patch) | |
| tree | 4df7cb9fdf22ebec1bc10a049efff6af25023581 /hw/char/cadence_uart.c | |
| parent | 19109131ca2701de1b4e083bd51172f376f7a5ef (diff) | |
sysbus: Make devices picking up backends unavailable with -device
Device models aren't supposed to go on fishing expeditions for
backends. They should expose suitable properties for the user to set.
For onboard devices, board code sets them.
A number of sysbus devices pick up block backends in their init() /
instance_init() methods with drive_get_next() instead: sl-nand,
milkymist-memcard, pl181, generic-sdhci.
Likewise, a number of sysbus devices pick up character backends in
their init() / realize() methods with qemu_char_get_next_serial():
cadence_uart, digic-uart, etraxfs,serial, lm32-juart, lm32-uart,
milkymist-uart, pl011, stm32f2xx-usart, xlnx.xps-uartlite.
All these mistakes are already marked FIXME. See the commit that
added these FIXMEs for a more detailed explanation of what's wrong.
Fortunately, only machines ppce500 and pseries-* support -device with
sysbus devices, and none of the devices above is supported with these
machines.
Set cannot_instantiate_with_device_add_yet to preserve our luck.
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'hw/char/cadence_uart.c')
| -rw-r--r-- | hw/char/cadence_uart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c index 4f38f0c6a5..d1453782a7 100644 --- a/hw/char/cadence_uart.c +++ b/hw/char/cadence_uart.c @@ -537,6 +537,8 @@ static void cadence_uart_class_init(ObjectClass *klass, void *data) dc->realize = cadence_uart_realize; dc->vmsd = &vmstate_cadence_uart; dc->reset = cadence_uart_reset; + /* Reason: realize() method uses qemu_char_get_next_serial() */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo cadence_uart_info = { |