Merge branches 'v3.10/topic/be' and 'v3.10/topic/arm64-be' of git://git.linaro.org...

[firefly-linux-kernel-4.4.55.git] / drivers / ata / libata-core.c

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8cacd1693f030d74e7e838e1ccc7459cb26d85c5..15518fda2d2ade0806e7b924aef755b52b0528ba 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2199,6 +2199,16 @@ int ata_dev_configure(struct ata_device *dev)
        if (rc)
                return rc;
 
+       /* some WD SATA-1 drives have issues with LPM, turn on NOLPM for them */
+       if ((dev->horkage & ATA_HORKAGE_WD_BROKEN_LPM) &&
+           (id[ATA_ID_SATA_CAPABILITY] & 0xe) == 0x2)
+               dev->horkage |= ATA_HORKAGE_NOLPM;
+
+       if (dev->horkage & ATA_HORKAGE_NOLPM) {
+               ata_dev_warn(dev, "LPM support broken, forcing max_power\n");
+               dev->link->ap->target_lpm_policy = ATA_LPM_MAX_POWER;
+       }
+
        /* let ACPI work its magic */
        rc = ata_acpi_on_devcfg(dev);
        if (rc)
@@ -4189,6 +4199,23 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
        { "PIONEER DVD-RW  DVR-212D",   NULL,   ATA_HORKAGE_NOSETXFER },
        { "PIONEER DVD-RW  DVR-216D",   NULL,   ATA_HORKAGE_NOSETXFER },
 
+       /*
+        * Some WD SATA-I drives spin up and down erratically when the link
+        * is put into the slumber mode.  We don't have full list of the
+        * affected devices.  Disable LPM if the device matches one of the
+        * known prefixes and is SATA-1.  As a side effect LPM partial is
+        * lost too.
+        *
+        * https://bugzilla.kernel.org/show_bug.cgi?id=57211
+        */
+       { "WDC WD800JD-*",              NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD1200JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD1600JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD2000JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD2500JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD3000JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+       { "WDC WD3200JD-*",             NULL,   ATA_HORKAGE_WD_BROKEN_LPM },
+
        /* End Marker */
        { }
 };