While performing certain power-off sequences, PCI drivers are
called to suspend and resume their underlying devices through
PCI PM (power management) interface. However this NIC hardware
does not support PCI PM suspend/resume operations so system wide
suspend/resume leads to bad MFW (management firmware) state which
causes various follow-up errors in driver when communicating with
the device/firmware afterwards.
To fix this driver implements PCI PM suspend handler to indicate
unsupported operation to the PCI subsystem explicitly, thus avoiding
system to go into suspended/standby mode.
Without this fix device/firmware does not recover unless system
is power cycled.
Fixes:
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.. | ||
Makefile | ||
qede.h | ||
qede_dcbnl.c | ||
qede_ethtool.c | ||
qede_filter.c | ||
qede_fp.c | ||
qede_main.c | ||
qede_ptp.c | ||
qede_ptp.h | ||
qede_rdma.c |