On Thu, Jul 31, 2008 at 3:03 AM, Tejun Heo <tj@xxxxxxxxxx> wrote:
...
> Heh.. didn't read the last line. If you can't upgrade the kernel,
> you'll need to backport. We had to fix core PMP support quite a bit to
> get mv working, so you'll need to backport whole libata, which usually
> isn't too difficult. Someone knowledgeable would be able to pull it in
> a few days but if you don't know what you're doing it can be pretty
> hairy. :-)
Backport libata from 2.6.26 to 2.6.24 is trivial compared
to other stuff I've seen backported. Below is an initial version
someone else did for 2.6.26-rc5 and it seems to be working.
It at least will give you an idea of what changed.
Steps to apply are:
o rm -rf 2.6.24/drivers/ata
o copy 2.6.26/drivers/ata to your 2.6.24/drivers/ata
o apply the following patch and it should at least compile.
hth,
grant
--- /usr/local/work/linux-2.6.26-rc5/drivers/ata/ahci.c 2008-06-04
23:42:33.000000000 -0700
+++ /usr/local/work/libata2624_all/2.6.24/drivers/ata/ahci.c 2008-06-05
11:55:12.000000000 -0700
@@ -273,8 +273,8 @@
static int ahci_pci_device_resume(struct pci_dev *pdev);
#endif
-static struct device_attribute *ahci_shost_attrs[] = {
- &dev_attr_link_power_management_policy,
+static struct class_device_attribute *ahci_shost_attrs[] = {
+ &class_device_attr_link_power_management_policy,
NULL
};
diff -urNbBwEP /usr/local/work/linux-2.6.26-rc5/drivers/ata/libata-scsi.c
/usr/local/work/libata2624_all/2.6.24/drivers/ata/libata-scsi.c
--- /usr/local/work/linux-2.6.26-rc5/drivers/ata/libata-scsi.c 2008-06-10
02:25:59.000000000 -0700
+++ /usr/local/work/libata2624_all/2.6.24/drivers/ata/libata-scsi.c 2008-06-05
12:19:08.000000000 -0700
@@ -135,11 +135,10 @@
return NULL;
}
-static ssize_t ata_scsi_lpm_put(struct device *dev,
- struct device_attribute *attr,
+static ssize_t ata_scsi_lpm_put(struct class_device *class_dev,
const char *buf, size_t count)
{
- struct Scsi_Host *shost = class_to_shost(dev);
+ struct Scsi_Host *shost = class_to_shost(class_dev);
struct ata_port *ap = ata_shost_to_port(shost);
enum link_pm policy = 0;
int i;
@@ -167,9 +166,9 @@
}
static ssize_t
-ata_scsi_lpm_show(struct device *dev, struct device_attribute *attr, char *buf)
+ata_scsi_lpm_show(struct class_device *class_dev, char *buf)
{
- struct Scsi_Host *shost = class_to_shost(dev);
+ struct Scsi_Host *shost = class_to_shost(class_dev);
struct ata_port *ap = ata_shost_to_port(shost);
const char *policy =
ata_scsi_lpm_get(ap->pm_policy);
@@ -179,9 +178,9 @@
return snprintf(buf, 23, "%s\n", policy);
}
-DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
+CLASS_DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
ata_scsi_lpm_show, ata_scsi_lpm_put);
-EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
+EXPORT_SYMBOL_GPL(class_device_attr_link_power_management_policy);
static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
{
diff -urNbBwEP /usr/local/work/linux-2.6.26-rc5/drivers/ata/libata-sff.c
/usr/local/work/libata2624_all/2.6.24/drivers/ata/libata-sff.c
--- /usr/local/work/linux-2.6.26-rc5/drivers/ata/libata-sff.c 2008-06-04
23:42:33.000000000 -0700
+++ /usr/local/work/libata2624_all/2.6.24/drivers/ata/libata-sff.c 2008-06-10
00:19:49.000000000 -0700
@@ -278,7 +278,7 @@
return status;
}
/* Clear INTRQ latch */
- status = ata_sff_check_status(ap);
+ status = ap->ops->sff_check_status(ap);
return status;
}
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