From: Christoph Hellwig Date: Wed, 4 Jan 2006 12:45:20 +0000 (+0100) Subject: [SCSI] sas: fix removal of devices behind expanders X-Git-Tag: firefly_0821_release~38898^2~45 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d4054239929479907f20b9d68c905589125ad343;p=firefly-linux-kernel-4.4.55.git [SCSI] sas: fix removal of devices behind expanders We need to iterate over all children when removing and expander, else stale objects will be around after host removal. This fixes the oops Eric Moore saw when removing and reloading mptsas. Also don't try the scsi_remove_target call unless operating on an end device. The current unconditional call is harmless but confusing. Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index 357b52f5f996..e950435a11d8 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -687,7 +687,17 @@ sas_rphy_delete(struct sas_rphy *rphy) struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); - scsi_remove_target(dev); + switch (rphy->identify.device_type) { + case SAS_END_DEVICE: + scsi_remove_target(dev); + break; + case SAS_EDGE_EXPANDER_DEVICE: + case SAS_FANOUT_EXPANDER_DEVICE: + device_for_each_child(dev, NULL, do_sas_phy_delete); + break; + default: + break; + } transport_remove_device(dev); device_del(dev);