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authorTejun Heo <htejun@gmail.com>2008-04-07 17:47:22 +0400
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 23:44:25 +0400
commit071f44b1d2c051641b62a3571223314737ccbe59 (patch)
treea07794c8109e5d82a78223ae0159eadbf862c463 /drivers/ata/libata-pmp.c
parent48515f6c006c2a9d7b624ee8ad068018c2d3fe0e (diff)
downloadlinux-071f44b1d2c051641b62a3571223314737ccbe59.tar.xz
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-pmp.c')
-rw-r--r--drivers/ata/libata-pmp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index bb10c0630791..ff1822a7da38 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -411,7 +411,7 @@ int sata_pmp_attach(struct ata_device *dev)
int rc;
/* is it hanging off the right place? */
- if (!(ap->flags & ATA_FLAG_PMP)) {
+ if (!sata_pmp_supported(ap)) {
ata_dev_printk(dev, KERN_ERR,
"host does not support Port Multiplier\n");
return -EINVAL;
@@ -876,7 +876,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
retry:
/* PMP attached? */
- if (!ap->nr_pmp_links) {
+ if (!sata_pmp_attached(ap)) {
rc = ata_eh_recover(ap, ops->prereset, ops->softreset,
ops->hardreset, ops->postreset, NULL);
if (rc) {
@@ -983,7 +983,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
if (ap->pflags & ATA_PFLAG_UNLOADING)
return rc;
- if (!ap->nr_pmp_links)
+ if (!sata_pmp_attached(ap))
goto retry;
if (--pmp_tries) {