[PATCH] mptsas: Fixup device hotplug for VMWare ESXi

Hannes Reinecke
2017-08-24T12:52:51Z

VMWare ESXi emulates an mptsas HBA, but exposes all drives as
direct-attached SAS drives.
This it not how the driver originally envisioned things; SAS drives
were supposed to be connected via an expander, and only SATA drives
would be direct attached.
As such any hotplug event for direct-attach SAS drives was silently
ignored, and the guest failed to detect new drives from within a
VMWare ESXi environment.

Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1030850
Signed-off-by: Hannes Reinecke <hare@suse.com>
---
drivers/message/fusion/mptsas.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index f6308ad..b9bd6aa 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -4352,11 +4352,10 @@ static void mptsas_expander_delete(MPT_ADAPTER *ioc,
return;

phy_info = mptsas_refreshing_device_handles(ioc, &sas_device);
- /* Only For SATA Device ADD */
- if (!phy_info && (sas_device.device_info &
- MPI_SAS_DEVICE_INFO_SATA_DEVICE)) {
+ /* Device hostplug */
+ if (!phy_info) {
devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT
- "%s %d SATA HOT PLUG: "
+ "%s %d HOT PLUG: "
"parent handle of device %x\n", ioc->name,
__func__, __LINE__, sas_device.handle_parent));
port_info = mptsas_find_portinfo_by_handle(ioc,
--
1.8.5.6