3.2.70-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Gabriele Mazzotta <gabriele....@gmail.com>
commit 8393b811f38acdf7fd8da2028708edad3e68ce1f upstream.
This is a preparation commit that will allow to add other criteria
according to which PHY events should be dropped.
Signed-off-by: Gabriele Mazzotta <gabriele....@gmail.com>
Signed-off-by: Tejun Heo <t...@kernel.org>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/ata/libahci.c | 3 +--
drivers/ata/libata-core.c | 19 +++++++++++++++++++
include/linux/libata.h | 1 +
3 files changed, 21 insertions(+), 2 deletions(-)
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1668,8 +1668,7 @@ static void ahci_port_intr(struct ata_po
if (unlikely(resetting))
status &= ~PORT_IRQ_BAD_PMP;
- /* if LPM is enabled, PHYRDY doesn't mean anything */
- if (ap->link.lpm_policy > ATA_LPM_MAX_POWER) {
+ if (sata_lpm_ignore_phy_events(&ap->link)) {
status &= ~PORT_IRQ_PHYRDY;
ahci_scr_write(&ap->link, SCR_ERROR, SERR_PHYRDY_CHG);
}
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6615,6 +6615,25 @@ u32 ata_wait_register(struct ata_port *a
return tmp;
}
+/**
+ * sata_lpm_ignore_phy_events - test if PHY event should be ignored
+ * @link: Link receiving the event
+ *
+ * Test whether the received PHY event has to be ignored or not.
+ *
+ * LOCKING:
+ * None:
+ *
+ * RETURNS:
+ * True if the event has to be ignored.
+ */
+bool sata_lpm_ignore_phy_events(struct ata_link *link)
+{
+ /* if LPM is enabled, PHYRDY doesn't mean anything */
+ return !!(link->lpm_policy > ATA_LPM_MAX_POWER);
+}
+EXPORT_SYMBOL_GPL(sata_lpm_ignore_phy_events);
+
/*
* Dummy port_ops
*/
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1064,6 +1064,7 @@ extern struct ata_device *ata_dev_pair(s
extern int ata_do_set_mode(struct ata_link *link, struct ata_device
**r_failed_dev);
extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct
ata_port *ap);
extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port
*ap, struct list_head *eh_q);
+extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
extern int ata_cable_40wire(struct ata_port *ap);
extern int ata_cable_80wire(struct ata_port *ap);
--
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