The patch titled
sata ahci: Blacklist system that spins off disks during ACPI power off
has been added to the -mm tree. Its filename is
sata-ahci-blacklist-system-that-spins-off-disks-during-acpi-power-off.patch
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------------------------------------------------------
Subject: sata ahci: Blacklist system that spins off disks during ACPI power off
From: Rafael J. Wysocki <rjw@xxxxxxx>
Some notebooks from HP have the problem that their BIOSes attempt to spin
down hard drives before entering ACPI system states S4 and S5. This leads
to a yo-yo effect during system power-off shutdown and the last phase of
hibernation when the disk is first spun down by the kernel and then almost
immediately turned on and off by the BIOS. This, in turn, may result in
shortening the disk's life times.
To prevent this from happening we can blacklist the affected systems using
DMI information.
Blacklist HP nx6310 that uses the AHCI driver.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Tested-by: Maciej Rutecki <maciej.rutecki@xxxxxxxxx>
Tested-by: Frans Pop <elendil@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/ata/ahci.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff -puN drivers/ata/ahci.c~sata-ahci-blacklist-system-that-spins-off-disks-during-acpi-power-off drivers/ata/ahci.c
--- a/drivers/ata/ahci.c~sata-ahci-blacklist-system-that-spins-off-disks-during-acpi-power-off
+++ a/drivers/ata/ahci.c
@@ -2548,6 +2548,32 @@ static void ahci_p5wdh_workaround(struct
}
}
+static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
+{
+ static const struct dmi_system_id broken_systems[] = {
+ {
+ .ident = "HP Compaq nx6310",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6310"),
+ },
+ /* PCI slot number of the controller */
+ .driver_data = (void *)0x1FUL,
+ },
+
+ { } /* terminate list */
+ };
+ const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
+
+ if (dmi) {
+ unsigned long slot = (unsigned long)dmi->driver_data;
+ /* apply the quirk only to on-board controllers */
+ return slot == PCI_SLOT(pdev->devfn);
+ }
+
+ return false;
+}
+
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
@@ -2647,6 +2673,12 @@ static int ahci_init_one(struct pci_dev
}
}
+ if (ahci_broken_system_poweroff(pdev)) {
+ pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;
+ dev_info(&pdev->dev,
+ "quirky BIOS, skipping spindown on poweroff\n");
+ }
+
/* CAP.NP sometimes indicate the index of the last enabled
* port, at other times, that of the last possible port, so
* determining the maximum port number requires looking at
_
Patches currently in -mm which might be from rjw@xxxxxxx are
linux-next.patch
drivers-consolidate-driver_probe_done-loops-into-one-place.patch
drivers-consolidate-driver_probe_done-loops-into-one-place-fix.patch
drivers-consolidate-driver_probe_done-loops-into-one-place-checkpatch-fixes.patch
resume-wait-for-device-probing-to-finish.patch
misc-dell-laptop-should-depend-on-power_supply.patch
hibernation-introduce-system_entering_hibernation.patch
dmi-introduce-dmi_first_match-to-make-the-interface-more-flexible.patch
sata-blacklisting-of-systems-that-spin-off-disks-during-acpi-power-off.patch
sata-ahci-blacklist-system-that-spins-off-disks-during-acpi-power-off.patch
sata-sil-blacklist-system-that-spins-off-disks-during-acpi-power-off.patch
sata-piix-blacklist-system-that-spins-off-disks-during-acpi-power-off.patch
shrink_slab-handle-bad-shrinkers.patch
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