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/stm32f2xx_usart.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/stm32f2xx_usart.c')
| -rw-r--r-- | hw/char/stm32f2xx_usart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/char/stm32f2xx_usart.c b/hw/char/stm32f2xx_usart.c index 669c4e3b6f..c9d3a1be77 100644 --- a/hw/char/stm32f2xx_usart.c +++ b/hw/char/stm32f2xx_usart.c @@ -212,6 +212,8 @@ static void stm32f2xx_usart_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); dc->reset = stm32f2xx_usart_reset; + /* Reason: instance_init() method uses qemu_char_get_next_serial() */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo stm32f2xx_usart_info = { |