Public bug reported:
When CONFIG_GOLDFISH_BUS is set to "y", the goldfish_pdev_bus driver is
compiled into the kernel and claims the serial UART, breaking serial
communications with the following kernel message: "genirq: Flags
mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus)"
repeated several times on boot.
I checked the configs for 4.4 in Yakkety and Xenial and 4.5 in mainline
and found that CONFIG_GOLDFISH was set to "n" there, completely
disabling all the goldfish drivers. Since this is a driver for the
Android emulator, I'm not even sure it is appropriate to be enabled at
all for desktop systems, but the goldfish_pdev_bus driver breaking
serial definitely shouldn't happen.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1580960
Title:
Ubuntu-4.6.0-5.6 configuration has CONFIG_GOLDFISH and
CONFIG_GOLDFISH_BUS enabled, breaking serial support on normal systems
Status in linux package in Ubuntu:
Incomplete
Bug description:
When CONFIG_GOLDFISH_BUS is set to "y", the goldfish_pdev_bus driver
is compiled into the kernel and claims the serial UART, breaking
serial communications with the following kernel message: "genirq:
Flags mismatch irq 4. 00000000 (serial) vs. 00000080
(goldfish_pdev_bus)" repeated several times on boot.
I checked the configs for 4.4 in Yakkety and Xenial and 4.5 in
mainline and found that CONFIG_GOLDFISH was set to "n" there,
completely disabling all the goldfish drivers. Since this is a driver
for the Android emulator, I'm not even sure it is appropriate to be
enabled at all for desktop systems, but the goldfish_pdev_bus driver
breaking serial definitely shouldn't happen.
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1580960/+subscriptions
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