qede: fix firmware halt over suspend and resume
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: 2950219d ("qede: Add basic network device support") Signed-off-by:Manish Chopra <manishc@marvell.com> Signed-off-by:
Alok Prasad <palok@marvell.com> Reviewed-by:
John Meneghini <jmeneghi@redhat.com> Reviewed-by:
Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20230816150711.59035-1-manishc@marvell.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
parent
b616be6b
Please register or sign in to comment