libata: ignore SIMG4726 config pseudo device

I was hoping ATA_HORKAGE_NODMA | ATA_HORKAGE_SKIP_PM could keep it
happy but no even this doesn't work under certain configurations and
it's not like we can do anything useful with the cofig device anyway.
Replace ATA_HORKAGE_SKIP_PM with ATA_HORKAGE_DISABLE and use it for
the config device.  This makes the device completely ignored by
libata.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a12a27e..3c89f20 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2126,6 +2126,13 @@ int ata_dev_configure(struct ata_device *dev)
        dev->horkage |= ata_dev_blacklisted(dev);
        ata_force_horkage(dev);
 
+       if (dev->horkage & ATA_HORKAGE_DISABLE) {
+               ata_dev_printk(dev, KERN_INFO,
+                              "unsupported device, disabling\n");
+               ata_dev_disable(dev);
+               return 0;
+       }
+
        /* let ACPI work its magic */
        rc = ata_acpi_on_devcfg(dev);
        if (rc)
@@ -3893,8 +3900,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
        { "SAMSUNG CD-ROM SN-124", "N001",      ATA_HORKAGE_NODMA },
        { "Seagate STT20000A", NULL,            ATA_HORKAGE_NODMA },
        /* Odd clown on sil3726/4726 PMPs */
-       { "Config  Disk",       NULL,           ATA_HORKAGE_NODMA |
-                                               ATA_HORKAGE_SKIP_PM },
+       { "Config  Disk",       NULL,           ATA_HORKAGE_DISABLE },
 
        /* Weird ATAPI devices */
        { "TORiSAN DVD-ROM DRD-N216", NULL,     ATA_HORKAGE_MAX_SEC_128 },

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 3ce4392..aeb6e01 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1082,12 +1082,6 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
        if (((cdb[4] >> 4) & 0xf) != 0)
                goto invalid_fld;       /* power conditions not supported */
 
-       if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) {
-               /* the device lacks PM support, finish without doing anything */
-               scmd->result = SAM_STAT_GOOD;
-               return 1;
-       }
-
        if (cdb[4] & 0x1) {
                tf->nsect = 1;  /* 1 sector, lba=0 */
 

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 8d6999d..4a92fba 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -351,7 +351,7 @@ enum {
        ATA_HORKAGE_NONCQ       = (1 << 2),     /* Don't use NCQ */
        ATA_HORKAGE_MAX_SEC_128 = (1 << 3),     /* Limit max sects to 128 */
        ATA_HORKAGE_BROKEN_HPA  = (1 << 4),     /* Broken HPA */
-       ATA_HORKAGE_SKIP_PM     = (1 << 5),     /* Skip PM operations */
+       ATA_HORKAGE_DISABLE     = (1 << 5),     /* Disable it */
        ATA_HORKAGE_HPA_SIZE    = (1 << 6),     /* native size off by one */
        ATA_HORKAGE_IPM         = (1 << 7),     /* Link PM problems */
        ATA_HORKAGE_IVB         = (1 << 8),     /* cbl det validity bit bugs */