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| author |   Tejun Heo <htejun@gmail.com> | 2008-04-07 22:47:22 +0900 |
|---|---|---|
| committer |   Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:25 -0400 |
| commit | 071f44b1d2c051641b62a3571223314737ccbe59 (patch) | |
| tree | a07794c8109e5d82a78223ae0159eadbf862c463 /drivers/ata/libata-eh.c | |
| parent | libata: separate PMP support code from core code (diff) | |
| download | linux-dev-071f44b1d2c051641b62a3571223314737ccbe59.tar.xz linux-dev-071f44b1d2c051641b62a3571223314737ccbe59.zip | |
libata: implement PMP helpers
Implement helpers to test whether PMP is supported, attached and
determine pmp number to use when issuing SRST to a link. While at it,
move ata_is_host_link() so that it's together with the two new PMP
helpers.
This change simplifies LLDs and helps making PMP support optional.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/libata-eh.c')
| -rw-r--r-- | drivers/ata/libata-eh.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 4ec1397434c0..99f83bdc572b 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -873,9 +873,9 @@ int sata_async_notification(struct ata_port *ap) if (rc == 0) sata_scr_write(&ap->link, SCR_NOTIFICATION, sntf); - if (!ap->nr_pmp_links || rc) { + if (!sata_pmp_attached(ap) || rc) { /* PMP is not attached or SNTF is not available */ - if (!ap->nr_pmp_links) { + if (!sata_pmp_attached(ap)) { /* PMP is not attached. Check whether ATAPI * AN is configured. If so, notify media * change. @@ -1853,7 +1853,7 @@ void ata_eh_autopsy(struct ata_port *ap) /* Autopsy of fanout ports can affect host link autopsy. * Perform host link autopsy last. */ - if (ap->nr_pmp_links) + if (sata_pmp_attached(ap)) ata_eh_link_autopsy(&ap->link); } @@ -2076,7 +2076,7 @@ static int ata_eh_followup_srst_needed(struct ata_link *link, } if (rc != 0) return 0; - if ((link->ap->flags & ATA_FLAG_PMP) && ata_is_host_link(link)) + if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) return 1; return 0; } @@ -2668,7 +2668,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, /* if PMP is attached, this function only deals with * downstream links, port should stay thawed. */ - if (!ap->nr_pmp_links) + if (!sata_pmp_attached(ap)) ata_eh_freeze_port(ap); ata_port_for_each_link(link, ap) { @@ -2687,7 +2687,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, } } - if (!ap->nr_pmp_links) + if (!sata_pmp_attached(ap)) ata_eh_thaw_port(ap); } @@ -2731,7 +2731,7 @@ dev_fail: /* PMP reset requires working host port. * Can't retry if it's frozen. */ - if (ap->nr_pmp_links) + if (sata_pmp_attached(ap)) goto out; break; } |