mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 14:42:24 +00:00
cc8e7a355c
The PNP ACPI driver squirrels the ACPI handles of PNP devices' ACPI companions, but this isn't correct, because those handles should be accessed using the DEVICE_ACPI_HANDLE() macro operating on struct device objects. Using DEVICE_ACPI_HANDLE() in the PNP ACPI driver instead of the driver's own copies of the ACPI handles allows us to avoid a problem with docking stations where a machine docked before suspend to RAM and undocked while suspended crashes during the subsequent resume (in that case the ACPI companion of the PNP device in question doesn't exist any more while the device is being resumed). It also allows us to avoid the problem where suspend to RAM fails when the machine was undocked while suspended before (again, the ACPI companion of the PNP device is not present any more while it is being suspended). This change doesn't fix all of the the PNP ACPI driver's problems with PNP devices in docking stations (generally speaking, the driver has no idea that devices can come and go and doesn't even attempt to handle such events), but at least it makes suspend work for the users of docking stations who don't use the PNP devices located in there. References: https://bugzilla.kernel.org/show_bug.cgi?id=15100 Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com> |
||
|---|---|---|
| .. | ||
| isapnp | ||
| pnpacpi | ||
| pnpbios | ||
| base.h | ||
| card.c | ||
| core.c | ||
| driver.c | ||
| interface.c | ||
| Kconfig | ||
| Makefile | ||
| manager.c | ||
| quirks.c | ||
| resource.c | ||
| support.c | ||
| system.c | ||