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| author | Gabriele Mazzotta | 2015-04-25 19:52:36 +0200 |
|---|---|---|
| committer | Tejun Heo | 2015-04-25 22:50:14 +0200 |
| commit | 8393b811f38acdf7fd8da2028708edad3e68ce1f (patch) | |
| tree | 416d3ec188647783e4364f162a793ef3369aabc0 /drivers/ata/libata-core.c | |
| parent | ata: ahci_st: fixup layering violations / drvdata errors (diff) | |
| download | kernel-qcow2-linux-8393b811f38acdf7fd8da2028708edad3e68ce1f.tar.gz kernel-qcow2-linux-8393b811f38acdf7fd8da2028708edad3e68ce1f.tar.xz kernel-qcow2-linux-8393b811f38acdf7fd8da2028708edad3e68ce1f.zip | |
libata: Add helper to determine when PHY events should be ignored
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.mzt@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f6cb1f1b30b7..12adcf78f94b 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6752,6 +6752,25 @@ u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val, 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 */ |