From 8880839815265ccc0edaff52ba08d750eea57acb Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 11 Jan 2007 14:14:49 -0800 Subject: [PATCH] [SCSI] libsas: Clean up rphys/port dev list after a discovery error. 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. Signed-off-by: Darrick J. Wong Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_discover.c | 39 +++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index fb7df7b75811..21f538e4a0b5 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -548,7 +548,7 @@ int sas_discover_sata(struct domain_device *dev) res = sas_notify_lldd_dev_found(dev); if (res) - return res; + goto out_err2; switch (dev->dev_type) { case SATA_DEV: @@ -560,11 +560,25 @@ int sas_discover_sata(struct domain_device *dev) default: break; } + if (res) + goto out_err; sas_notify_lldd_dev_gone(dev); - if (!res) { - sas_notify_lldd_dev_found(dev); - } + res = sas_notify_lldd_dev_found(dev); + if (res) + goto out_err2; + + res = sas_rphy_add(dev->rphy); + if (res) + goto out_err; + + return res; + +out_err: + sas_notify_lldd_dev_gone(dev); +out_err2: + sas_rphy_free(dev->rphy); + dev->rphy = NULL; return res; } @@ -580,7 +594,7 @@ int sas_discover_end_dev(struct domain_device *dev) res = sas_notify_lldd_dev_found(dev); if (res) - return res; + goto out_err2; res = sas_rphy_add(dev->rphy); if (res) @@ -589,12 +603,21 @@ int sas_discover_end_dev(struct domain_device *dev) /* do this to get the end device port attributes which will have * been scanned in sas_rphy_add */ sas_notify_lldd_dev_gone(dev); - sas_notify_lldd_dev_found(dev); + res = sas_notify_lldd_dev_found(dev); + if (res) + goto out_err3; return 0; out_err: sas_notify_lldd_dev_gone(dev); +out_err2: + sas_rphy_free(dev->rphy); + dev->rphy = NULL; + return res; +out_err3: + sas_rphy_delete(dev->rphy); + dev->rphy = NULL; return res; } @@ -686,6 +709,10 @@ static void sas_discover_domain(struct work_struct *work) } if (error) { + spin_lock(&port->dev_list_lock); + list_del_init(&port->port_dev->dev_list_node); + spin_unlock(&port->dev_list_lock); + kfree(port->port_dev); /* not kobject_register-ed yet */ port->port_dev = NULL; } -- 2.34.1