From bf451207511d049189ddb0a4eae3acdb086a3c82 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 11 Jan 2007 14:14:52 -0800 Subject: [PATCH] [SCSI] libsas: Clean up rphys/port dev list after a discovery error on an expander sas_get_port_device assigns a rphy to a domain device in anticipation of finding a disk. When a discovery error occurs in sas_discover_{sata,sas,expander}*, however, we need to clean up that rphy and the port device list so that we don't GPF. In addition, we need to check the result of the second sas_notify_lldd_dev_found. This patch seems ok on a x260, x366 and x206m. This patch fixes up sas_expander.c separately because jejb has some cleanup patches of his own that are a prerequisite. Signed-off-by: Darrick J. Wong Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index d31e6fa466f7..0dfd97e7e96c 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -668,7 +668,6 @@ static struct domain_device *sas_ex_discover_end_dev( out_list_del: list_del(&child->dev_list_node); - sas_rphy_free(rphy); out_free: sas_port_delete(phy->port); out_err: @@ -1431,13 +1430,26 @@ int sas_discover_root_expander(struct domain_device *dev) int res; struct sas_expander_device *ex = rphy_to_expander_device(dev->rphy); - sas_rphy_add(dev->rphy); + res = sas_rphy_add(dev->rphy); + if (res) + goto out_err; ex->level = dev->port->disc.max_level; /* 0 */ res = sas_discover_expander(dev); - if (!res) - sas_ex_bfs_disc(dev->port); + if (res) + goto out_err2; + sas_ex_bfs_disc(dev->port); + + return res; + +out_err2: + sas_rphy_delete(dev->rphy); + dev->rphy = NULL; + return res; +out_err: + sas_rphy_free(dev->rphy); + dev->rphy = NULL; return res; }