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Date: Fri, 29 Aug 2008 00:02:54 +0200
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Cc: linux-ide@...r.kernel.org, Thomas Renninger <trenn@...e.de>,
Tejun Heo <htejun@...il.com>,
Robert Hancock <hancockr@...w.ca>,
LKML <linux-kernel@...r.kernel.org>
Subject: Regression: SATA disk double spin-off during hibernation on hp nx6325
Hi,
It appears that the "double spin-off" problem described in
http://bugzilla.kernel.org/show_bug.cgi?id=8855
has recently started to appear during hibernation as well as during shutdown.
It didn't appear during hibernation on my hp nx6325 with 2.6.26, so this is a
recent regression.
I have prepared the appended patch that fixes the problem for me, based on the
earlier Tejun's patch at
http://bugzilla.kernel.org/attachment.cgi?id=15441&action=view
but I'm not really sure if this is an acceptable solution. Please advise.
Thanks,
Rafael
not-yet-signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
drivers/ata/libata-scsi.c | 16 +++++++++++++---
drivers/ata/sata_sil.c | 30 +++++++++++++++++++++++++++++-
include/linux/libata.h | 1 +
kernel/power/disk.c | 2 ++
4 files changed, 45 insertions(+), 4 deletions(-)
Index: linux-2.6/drivers/ata/libata-scsi.c
===================================================================
--- linux-2.6.orig/drivers/ata/libata-scsi.c
+++ linux-2.6/drivers/ata/libata-scsi.c
@@ -1181,6 +1181,14 @@ static unsigned int ata_scsi_start_stop_
tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
} else {
+ /* Some odd clown BIOSen issue spindown on shutdown
+ * causing some drives to spin up and down again.
+ */
+ if ((qc->ap->flags & ATA_FLAG_NO_SHUTDOWN_SPINDOWN) &&
+ (system_state == SYSTEM_POWER_OFF ||
+ system_state == SYSTEM_SUSPEND_DISK))
+ goto skip;
+
/* XXX: This is for backward compatibility, will be
* removed. Read Documentation/feature-removal-schedule.txt
* for more info.
@@ -1204,8 +1212,7 @@ static unsigned int ata_scsi_start_stop_
scmd->scsi_done = qc->scsidone;
qc->scsidone = ata_delayed_done;
}
- scmd->result = SAM_STAT_GOOD;
- return 1;
+ goto skip;
}
/* Issue ATA STANDBY IMMEDIATE command */
@@ -1221,10 +1228,13 @@ static unsigned int ata_scsi_start_stop_
return 0;
-invalid_fld:
+ invalid_fld:
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
/* "Invalid field in cbd" */
return 1;
+ skip:
+ scmd->result = SAM_STAT_GOOD;
+ return 1;
}
Index: linux-2.6/drivers/ata/sata_sil.c
===================================================================
--- linux-2.6.orig/drivers/ata/sata_sil.c
+++ linux-2.6/drivers/ata/sata_sil.c
@@ -603,11 +603,33 @@ static void sil_init_controller(struct a
}
}
+static int sil_broken_shutdown(struct pci_dev *pdev)
+{
+ static const struct dmi_system_id sysid_nx6325[] = {
+ {
+ .ident = "HP Compaq nx6325",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
+ },
+ },
+
+ { } /* terminate list */
+ };
+
+ /* apply the quirk only to the on-board controller */
+ if (dmi_check_system(sysid_nx6325) && PCI_SLOT(pdev->devfn) == 18)
+ return 1;
+
+ return 0;
+}
+
static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
int board_id = ent->driver_data;
- const struct ata_port_info *ppi[] = { &sil_port_info[board_id], NULL };
+ struct ata_port_info pi = sil_port_info[board_id];
+ const struct ata_port_info *ppi[] = { &pi, NULL };
struct ata_host *host;
void __iomem *mmio_base;
int n_ports, rc;
@@ -621,6 +643,12 @@ static int sil_init_one(struct pci_dev *
if (board_id == sil_3114)
n_ports = 4;
+ if (sil_broken_shutdown(pdev)) {
+ pi.flags |= ATA_FLAG_NO_SHUTDOWN_SPINDOWN;
+ dev_printk(KERN_INFO, &pdev->dev,
+ "quirky BIOS, skipping spindown on shutdown\n");
+ }
+
host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
if (!host)
return -ENOMEM;
Index: linux-2.6/include/linux/libata.h
===================================================================
--- linux-2.6.orig/include/linux/libata.h
+++ linux-2.6/include/linux/libata.h
@@ -187,6 +187,7 @@ enum {
* doesn't handle PIO interrupts */
ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
ATA_FLAG_DEBUGMSG = (1 << 13),
+ ATA_FLAG_NO_SHUTDOWN_SPINDOWN = (1 << 14), /* don't spindown on shutdown */
ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
Index: linux-2.6/kernel/power/disk.c
===================================================================
--- linux-2.6.orig/kernel/power/disk.c
+++ linux-2.6/kernel/power/disk.c
@@ -416,6 +416,7 @@ int hibernation_platform_enter(void)
if (error)
goto Close;
+ system_state = SYSTEM_SUSPEND_DISK;
suspend_console();
ftrace_save = __ftrace_enabled_save();
error = device_suspend(PMSG_HIBERNATE);
@@ -451,6 +452,7 @@ int hibernation_platform_enter(void)
Finish:
hibernation_ops->finish();
Resume_devices:
+ system_state = SYSTEM_RUNNING;
device_resume(PMSG_RESTORE);
__ftrace_enabled_restore(ftrace_save);
resume_console();
--
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