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[SCSI] libfc: discovery gpn_ft parse bug

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In fc_disc_gpn_ft_parse(), after fc_disc_done() is called, the
disc state is changed by setting buf_len = 0.  This is wrong
since the discovery may have restarted.   Instead, return
after calling fc_disc_done.

Also, return an error on memory allocation failure.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2009-08-25 14:02:43 -07:00 committed by James Bottomley
parent 3667d7e7f7
commit 81a67b9717
1 changed files with 4 additions and 3 deletions
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7
drivers/scsi/libfc/fc_disc.c
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@ -479,6 +479,7 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len)
plen = len;
np = (struct fc_gpn_ft_resp *)bp;
tlen = disc->buf_len;
disc->buf_len = 0;
if (tlen) {
WARN_ON(tlen >= sizeof(*np));
plen = sizeof(*np) - tlen;
@ -519,10 +520,12 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len)
rdata = lport->tt.rport_create(lport, &ids);
if (rdata)
rdata->disc_id = disc->disc_id;
else
else {
printk(KERN_WARNING "libfc: Failed to allocate "
"memory for the newly discovered port "
"(%6x)\n", ids.port_id);
error = -ENOMEM;
}
}
if (np->fp_flags & FC_NS_FID_LAST) {
@ -546,8 +549,6 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len)
memcpy(&disc->partial_buf, np, len);
}
disc->buf_len = (unsigned char) len;
} else {
disc->buf_len = 0;
}
return error;
}