ata: ahci: Rename CONFIG_SATA_LPM_POLICY configuration item back

CONFIG_SATA_LPM_MOBILE_POLICY was renamed to CONFIG_SATA_LPM_POLICY in
commit 4dd4d3deb502 ("ata: ahci: Rename CONFIG_SATA_LPM_MOBILE_POLICY
configuration item").

This can potentially cause problems as users would invisibly lose
configuration policy defaults when they built the new kernel. To
avoid such problems, switch back to the old name (even if it's wrong).

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index e5641e6..bb45a9c 100644 (file)
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -115,14 +115,16 @@ config SATA_AHCI
 
          If unsure, say N.
 
-config SATA_LPM_POLICY
+config SATA_MOBILE_LPM_POLICY
        int "Default SATA Link Power Management policy for low power chipsets"
        range 0 4
        default 0
        depends on SATA_AHCI
        help
          Select the Default SATA Link Power Management (LPM) policy to use
-         for chipsets / "South Bridges" designated as supporting low power.
+         for chipsets / "South Bridges" supporting low-power modes. Such
+         chipsets are typically found on most laptops but desktops and
+         servers now also widely use chipsets supporting low power modes.
 
          The value set has the following meanings:
                0 => Keep firmware settings

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 84456c0..397dfd2 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1595,7 +1595,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 static void ahci_update_initial_lpm_policy(struct ata_port *ap,
                                           struct ahci_host_priv *hpriv)
 {
-       int policy = CONFIG_SATA_LPM_POLICY;
+       int policy = CONFIG_SATA_MOBILE_LPM_POLICY;
 
 
        /* Ignore processing for chipsets that don't use policy */

diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 6ead58c..ad11a4c 100644 (file)
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -236,7 +236,7 @@ enum {
        AHCI_HFLAG_NO_WRITE_TO_RO       = (1 << 24), /* don't write to read
                                                        only registers */
        AHCI_HFLAG_USE_LPM_POLICY       = (1 << 25), /* chipset that should use
-                                                       SATA_LPM_POLICY
+                                                       SATA_MOBILE_LPM_POLICY
                                                        as default lpm_policy */
        AHCI_HFLAG_SUSPEND_PHYS         = (1 << 26), /* handle PHYs during
                                                        suspend/resume */