diff options
| author | Markus Armbruster <armbru@redhat.com> | 2020-06-09 14:23:17 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-06-15 21:36:09 +0200 |
| commit | f6a1f93d6a43c6ede9f32de3b4ccb126998f322e (patch) | |
| tree | 05ee6a519d7e47ff1c29978bc9b70ef6ceb75f73 /hw/display/xlnx_dp.c | |
| parent | 2fb1f7d29932db2908bdaad0f03c326e800d5e62 (diff) | |
| download | qemu-f6a1f93d6a43c6ede9f32de3b4ccb126998f322e.zip | |
display/xlnx_dp: Fix to realize "i2c-ddc" and "aux-to-i2c-bridge"
xlnx_dp_init() creates these two devices, but they're never realized.
Affects machine xlnx-zcu102.
In theory, a device becomes real only on realize. In practice, the
transition from unreal to real is a fuzzy one. The work to make a
device real can be spread between realize methods (fine),
instance_init methods (wrong), and board code wiring up the device
(fine as long as it effectively happens on realize). Depending on
what exactly is done where, a device can work even when we neglect to
realize it.
These two appear to work. Nevertheless, it's a clear misuse of the
interface. Even when it works today (more or less by chance), it can
break tomorrow.
Fix by realizing them in xlnx_dp_realize().
Fixes: 58ac482a66de09a7590f705e53fc6a3fb8a055e8
Cc: KONRAD Frederic <fred.konrad@greensocs.com>
Cc: Alistair Francis <alistair@alistair23.me>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200609122339.937862-3-armbru@redhat.com>
Diffstat (limited to 'hw/display/xlnx_dp.c')
| -rw-r--r-- | hw/display/xlnx_dp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/display/xlnx_dp.c b/hw/display/xlnx_dp.c index 8d940cd8d1..5210412e55 100644 --- a/hw/display/xlnx_dp.c +++ b/hw/display/xlnx_dp.c @@ -1266,9 +1266,13 @@ static void xlnx_dp_realize(DeviceState *dev, Error **errp) DisplaySurface *surface; struct audsettings as; + qdev_init_nofail(DEVICE(s->aux_bus->bridge)); + qdev_init_nofail(DEVICE(s->dpcd)); aux_map_slave(AUX_SLAVE(s->dpcd), 0x0000); + qdev_init_nofail(DEVICE(s->edid)); + s->console = graphic_console_init(dev, 0, &xlnx_dp_gfx_ops, s); surface = qemu_console_surface(s->console); xlnx_dpdma_set_host_data_location(s->dpdma, DP_GRAPHIC_DMA_CHANNEL, |