** Description changed:
- It looks like bbswitch is using acpi_bus_get_device() on any
- architectures, but this function is not available on armhf or ppc64el:
+ [Impact]
+
+ bbswitch is failing to build with the latest jammy kernel 5.15 on armhf
+ and ppc64el.
+
+ The build error that we get looks like the following:
CC [M] /var/lib/dkms/bbswitch/0.8/build/bbswitch.o
/var/lib/dkms/bbswitch/0.8/build/bbswitch.c: In function ‘bbswitch_off’:
/var/lib/dkms/bbswitch/0.8/build/bbswitch.c:271:13: error: implicit
declaration of function ‘acpi_bus_get_device’; did you mean
‘acpi_get_gpe_device’? [-Werror=implicit-function-declaration]
271 | r = acpi_bus_get_device(dis_handle, &ad);
| ^~~~~~~~~~~~~~~~~~~
| acpi_get_gpe_device
/var/lib/dkms/bbswitch/0.8/build/bbswitch.c:276:15: error: invalid use of
undefined type ‘struct acpi_device’
276 | if (ad->power.state == ACPI_STATE_UNKNOWN) {
| ^~
/var/lib/dkms/bbswitch/0.8/build/bbswitch.c:278:15: error: invalid use of
undefined type ‘struct acpi_device’
278 | ad->power.state = ACPI_STATE_D0;
| ^~
+
+ [Test case]
+
+ Install bbswitch-dkms.
+
+ [Fix]
+
+ It looks like bbswitch is using acpi_bus_get_device() on any
+ architectures to check for suspend events, but this function is not
+ available on armhf or ppc64el. The fix would be to avoid doing this
+ check (and using acpi_bus_get_device()) on architectures that don't have
+ this capability.
+
+ [Regression potential]
+
+ We should see potential bbswitch regressions on armhf or ppc64el if they
+ have suspend events (similar problem that is addressed on amd64 /
+ arm64).
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https://bugs.launchpad.net/bugs/1951583
Title:
bbswitch dkms build failure with 5.15 on armhf and ppc64el
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