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-rw-r--r--drivers/ata/libata-core.c13
-rw-r--r--include/linux/ata.h7
-rw-r--r--include/linux/libata.h1
3 files changed, 18 insertions, 3 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 711595390996..62c4b328b0b6 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2354,6 +2354,18 @@ int ata_cable_unknown(struct ata_port *ap)
}
/**
+ * ata_cable_ignore - return ignored PATA cable.
+ * @ap: port
+ *
+ * Helper method for drivers which don't use cable type to limit
+ * transfer mode.
+ */
+int ata_cable_ignore(struct ata_port *ap)
+{
+ return ATA_CBL_PATA_IGN;
+}
+
+/**
* ata_cable_sata - return SATA cable type
* @ap: port
*
@@ -7665,4 +7677,5 @@ EXPORT_SYMBOL_GPL(ata_dev_try_classify);
EXPORT_SYMBOL_GPL(ata_cable_40wire);
EXPORT_SYMBOL_GPL(ata_cable_80wire);
EXPORT_SYMBOL_GPL(ata_cable_unknown);
+EXPORT_SYMBOL_GPL(ata_cable_ignore);
EXPORT_SYMBOL_GPL(ata_cable_sata);
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 43fecf62773a..c17e9404c88d 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -286,9 +286,10 @@ enum {
ATA_CBL_NONE = 0,
ATA_CBL_PATA40 = 1,
ATA_CBL_PATA80 = 2,
- ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
- ATA_CBL_PATA_UNK = 4,
- ATA_CBL_SATA = 5,
+ ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
+ ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
+ ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
+ ATA_CBL_SATA = 6,
/* SATA Status and Control Registers */
SCR_STATUS = 0,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index d9eb20c67bb6..bdb7c6e13993 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -927,6 +927,7 @@ extern u8 ata_irq_on(struct ata_port *ap);
extern int ata_cable_40wire(struct ata_port *ap);
extern int ata_cable_80wire(struct ata_port *ap);
extern int ata_cable_sata(struct ata_port *ap);
+extern int ata_cable_ignore(struct ata_port *ap);
extern int ata_cable_unknown(struct ata_port *ap);
/*