From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: John Garry <john.garry@huawei.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Sasha Levin <sashal@kernel.org>,
linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 04/15] scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached
Date: Wed, 13 Mar 2019 15:17:50 -0400 [thread overview]
Message-ID: <20190313191806.160547-4-sashal@kernel.org> (raw)
In-Reply-To: <20190313191806.160547-1-sashal@kernel.org>
From: John Garry <john.garry@huawei.com>
[ Upstream commit ffeafdd2bf0b280d67ec1a47ea6287910d271f3f ]
The sysfs phy_identifier attribute for a sas_end_device comes from the rphy
phy_identifier value.
Currently this is not being set for rphys with an end device attached, so
we see incorrect symlinks from systemd disk/by-path:
root@localhost:~# ls -l /dev/disk/by-path/
total 0
lrwxrwxrwx 1 root root 9 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part3 -> ../../sdc3
Indeed, each sas_end_device phy_identifier value is 0:
root@localhost:/# more sys/class/sas_device/end_device-0\:0\:2/phy_identifier
0
root@localhost:/# more sys/class/sas_device/end_device-0\:0\:10/phy_identifier
0
This patch fixes the discovery code to set the phy_identifier. With this,
we now get proper symlinks:
root@localhost:~# ls -l /dev/disk/by-path/
total 0
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy10-lun-0 -> ../../sdg
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy11-lun-0 -> ../../sdh
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy2-lun-0 -> ../../sda
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy2-lun-0-part1 -> ../../sda1
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0 -> ../../sdc
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part3 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy5-lun-0 -> ../../sdd
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0 -> ../../sde
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part1 -> ../../sde1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part2 -> ../../sde2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part3 -> ../../sde3
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0 -> ../../sdf
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part1 -> ../../sdf1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part2 -> ../../sdf2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part3 -> ../../sdf3
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Reported-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/libsas/sas_expander.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 12886f96b286..7be581f7c35d 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -818,6 +818,7 @@ static struct domain_device *sas_ex_discover_end_dev(
rphy = sas_end_device_alloc(phy->port);
if (!rphy)
goto out_free;
+ rphy->identify.phy_identifier = phy_id;
child->rphy = rphy;
get_device(&rphy->dev);
@@ -845,6 +846,7 @@ static struct domain_device *sas_ex_discover_end_dev(
child->rphy = rphy;
get_device(&rphy->dev);
+ rphy->identify.phy_identifier = phy_id;
sas_fill_in_rphy(child, rphy);
list_add_tail(&child->disco_list_node, &parent->port->disco_list);
--
2.19.1
next prev parent reply other threads:[~2019-03-13 19:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-13 19:17 [PATCH AUTOSEL 4.4 01/15] ARM: 8824/1: fix a migrating irq bug when hotplug cpu Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 02/15] assoc_array: Fix shortcut creation Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 03/15] scsi: libiscsi: Fix race between iscsi_xmit_task and iscsi_complete_task Sasha Levin
2019-03-13 19:17 ` Sasha Levin [this message]
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 05/15] net: systemport: Fix reception of BPDUs Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 06/15] pinctrl: meson: meson8b: fix the sdxc_a data 1..3 pins Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 07/15] net: mv643xx_eth: disable clk on error path in mv643xx_eth_shared_probe() Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 08/15] ASoC: topology: free created components in tplg load error Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 09/15] arm64: Relax GIC version check during early boot Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 10/15] tmpfs: fix link accounting when a tmpfile is linked in Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 11/15] ARC: uacces: remove lp_start, lp_end from clobber list Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 12/15] phonet: fix building with clang Sasha Levin
2019-03-13 19:17 ` [PATCH AUTOSEL 4.4 13/15] mac80211_hwsim: propagate genlmsg_reply return code Sasha Levin
2019-03-13 19:18 ` [PATCH AUTOSEL 4.4 14/15] mdio_bus: Fix use-after-free on device_register fails Sasha Levin
2019-03-13 19:18 ` [PATCH AUTOSEL 4.4 15/15] net: set static variable an initial value in atl2_probe() Sasha Levin
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