Hi Nathan, On Wed, Aug 19, 2026 at 2:37 AM Nathan Chancellor <[email protected]> wrote: > > Hi Rafael, > > On Fri, Aug 07, 2026 at 12:22:37PM +0200, Rafael J. Wysocki wrote: > > From: "Rafael J. Wysocki" <[email protected]> > > > > If acpi_dev_get_resources() returns overlapping I/O or memory resources, > > the subsequent registration of a platform device will fail with -EBUSY > > due to a resource conflict. This is reported to happen on Acer Aspire > > ES1-572 [1]. > > > > Avoid that by adjusting resources returned by acpi_dev_get_resources() > > to eliminate partial overlaps between them. > > > > This has not been regarded as necessary before because putting > > overlapping resources into the _CRS of one device is really pointless, > > but now that the issue has been reported to actually happen in the > > field, it needs to be done. > > > > Fixes: ab06eb920401 ("ACPI: scan: Register platform devices for fixed event > > buttons") > > Reported-by: Julien <[email protected]> > > Closes: > > https://lore.kernel.org/linux-integrity/cajogg3z6ljpdsdpnbxajgy8_wqxfhybrxe4eiurzf3kpu5a...@mail.gmail.com/ > > [1] > > Cc: All applicable <[email protected]> > > Signed-off-by: Rafael J. Wysocki <[email protected]> > > I bisected the following kernel message that I see on one of my aarch64 > test machines to this change in -next as commit f234fdaae1ca ("ACPI: > scan: Avoid registering platform devices with resource overlaps"): > > arm-cmn ARMHC600:00: probe with driver arm-cmn failed with error -22 > > Is this expected? If not, what information would be helpful for debugging > this?
No, it is not. First, please send a boot log from the failing machine. Second, I think we may need the acpidump output from it.
