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| author | Jeff Skirvin <jeffrey.d.skirvin@intel.com> | 2012-06-21 23:36:10 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:52 +0100 |
| commit | b2311a287553af4dffaef224cdd6e3ddf6783312 (patch) | |
| tree | 406014158dd9f511e3f59de053f8ac4fe2e93394 | |
| parent | 4e646ddd5faf707602dcb4b491412b72180da3b3 (diff) | |
| download | blackbird-op-linux-b2311a287553af4dffaef224cdd6e3ddf6783312.tar.gz blackbird-op-linux-b2311a287553af4dffaef224cdd6e3ddf6783312.zip | |
[SCSI] libsas: sas_rediscover_dev did not look at the SMP exec status.
The discovery function "sas_rediscover_dev" had two bugs: 1) it did
not pay attention to the return status from the SMP task execution;
2) the stack variable used for the returned SAS address was compared
against 0 without being initialized.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index caa0525d2523..af659cc8308c 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -2005,6 +2005,7 @@ static int sas_rediscover_dev(struct domain_device *dev, int phy_id, bool last) u8 sas_addr[8]; int res; + memset(sas_addr, 0, 8); res = sas_get_phy_attached_dev(dev, phy_id, sas_addr, &type); switch (res) { case SMP_RESP_NO_PHY: @@ -2017,9 +2018,13 @@ static int sas_rediscover_dev(struct domain_device *dev, int phy_id, bool last) return res; case SMP_RESP_FUNC_ACC: break; + case -ECOMM: + break; + default: + return res; } - if (SAS_ADDR(sas_addr) == 0) { + if ((SAS_ADDR(sas_addr) == 0) || (res == -ECOMM)) { phy->phy_state = PHY_EMPTY; sas_unregister_devs_sas_addr(dev, phy_id, last); return res; |
