[PATCH 0/2] scsi: smartpqi: fix PCIe hot reset recovery

[Mateusz Nowicki <mateusz.nowicki@posteo.net>]

A PCIe bus reset (e.g. "echo 1 > /sys/bus/pci/devices/<bdf>/reset") on a
controller without FLR support leaves the HPE SR932i-p Gen10+ unusable
until reboot: smartpqi registers no pci_error_handlers, so the driver
is not notified, firmware reverts to SIS mode, and all queue mappings
are dropped while the driver still drives PQI.

Patch 1 adds .reset_prepare / .reset_done reusing
pqi_ofa_ctrl_quiesce() / _unquiesce() / pqi_ctrl_init_resume().

Patch 2 raises SIS_CTRL_READY_RESUME_TIMEOUT_SECS from 90s to 180s,
matching the cold-boot path; without this patch 1 fails at the SIS
ready check because firmware boot after reset takes ~125s on the
SR932i-p Gen10+.

Tested on HPE SR932i-p Gen10+ against Linus' master at 74fe02ce122a.

Note: the From: header is my Posteo address because my employer's SMTP
is unavailable for external mailing lists.  The Signed-off-by carries
the Microchip attribution.

Mateusz Nowicki (2):
  scsi: smartpqi: add pci_error_handlers for bus reset recovery
  scsi: smartpqi: increase SIS ctrl ready resume timeout to 180s

 drivers/scsi/smartpqi/smartpqi_init.c | 47 +++++++++++++++++++++++++++
 drivers/scsi/smartpqi/smartpqi_sis.c  |  2 +-
 2 files changed, 48 insertions(+), 1 deletion(-)

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2.43.0