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authorTejun Heo <htejun@gmail.com>2008-04-07 16:25:35 (GMT)
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 19:44:25 (GMT)
commit2a0c15ca39f5881aa1b472ca856bb7a2e584ece7 (patch)
tree28fe9136db8016720c272ba39df3a3b43a9715e2 /drivers/ata
parente50e3ce5e70e36e6069a8cc8292df76058fa9e23 (diff)
downloadlinux-2a0c15ca39f5881aa1b472ca856bb7a2e584ece7.tar.xz
libata: kill dead code paths in reset path
Some code paths which had been made obsolete by recent reset simplification were still around. Kill them. * ata_eh_reset() checked for ATA_DEV_UNKNOWN to determine classification failure. This is no longer applicable. * ata_do_reset() should convert ATA_DEV_UNKNOWN to ATA_DEV_NONE regardless of reset result (e.g. -EAGAIN). * LLDs don't need to convert ATA_DEV_UNKNOWN to ATA_DEV_NONE. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-eh.c19
-rw-r--r--drivers/ata/sata_inic162x.c2
-rw-r--r--drivers/ata/sata_sil24.c3
3 files changed, 1 insertions, 23 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 99f83bd..88cdc49 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2052,15 +2052,13 @@ static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset,
classes[dev->devno] = ATA_DEV_UNKNOWN;
rc = reset(link, classes, deadline);
- if (rc)
- return rc;
/* convert all ATA_DEV_UNKNOWN to ATA_DEV_NONE */
ata_link_for_each_dev(dev, link)
if (classes[dev->devno] == ATA_DEV_UNKNOWN)
classes[dev->devno] = ATA_DEV_NONE;
- return 0;
+ return rc;
}
static int ata_eh_followup_srst_needed(struct ata_link *link,
@@ -2209,21 +2207,6 @@ int ata_eh_reset(struct ata_link *link, int classify,
if (rc && rc != -EAGAIN)
goto fail;
- /* was classification successful? */
- if (classify && classes[0] == ATA_DEV_UNKNOWN &&
- !(lflags & ATA_LFLAG_ASSUME_CLASS)) {
- if (try < max_tries) {
- ata_link_printk(link, KERN_WARNING,
- "classification failed\n");
- rc = -EINVAL;
- goto fail;
- }
-
- ata_link_printk(link, KERN_WARNING,
- "classfication failed, assuming ATA\n");
- lflags |= ATA_LFLAG_ASSUME_ATA;
- }
-
done:
ata_link_for_each_dev(dev, link) {
/* After the reset, the device state is PIO 0 and the
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 9f47d00..d27bb9a 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -428,8 +428,6 @@ static int inic_hardreset(struct ata_link *link, unsigned int *class,
ata_sff_tf_read(ap, &tf);
*class = ata_dev_classify(&tf);
- if (*class == ATA_DEV_UNKNOWN)
- *class = ATA_DEV_NONE;
}
return 0;
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 0687893..20757fa 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -693,9 +693,6 @@ static int sil24_softreset(struct ata_link *link, unsigned int *class,
sil24_read_tf(ap, 0, &tf);
*class = ata_dev_classify(&tf);
- if (*class == ATA_DEV_UNKNOWN)
- *class = ATA_DEV_NONE;
-
out:
DPRINTK("EXIT, class=%u\n", *class);
return 0;