On Thursday, November 15, 2012 11:22:47 AM Vasilis Liaskovitis wrote: > As discussed in https://patchwork.kernel.org/patch/1581581/ > the driver core remove function needs to always succeed. This means we need > to know that the device can be successfully removed before acpi_bus_trim / > acpi_bus_hot_remove_device are called. This can cause panics when OSPM-initiated > eject or driver unbind of memory devices fails e.g with: > > echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject > echo "PNP0C80:XX" > /sys/bus/acpi/drivers/acpi_memhotplug/unbind > > since the ACPI core goes ahead and ejects the device regardless of whether the > the memory is still in use or not. So the question is, does the ACPI core have to do that and if so, then why? Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>