On Mon, Sep 11, 2023 at 01:02:05PM +0900, Damien Le Moal wrote: > If an error occurs when resuming a host adapter before the devices > attached to the adapter are resumed, the adapter low level driver may > remove the scsi host, resulting in a call to sd_remove() for the > disks of the host. However, since this function calls sd_shutdown(), > a synchronize cache command and a start stop unit may be issued with the > drive still sleeping and the HBA non-functional. This causes PM resume > to hang, forcing a reset of the machine to recover. > > Fix this by checking a device host state in sd_shutdown() and by > returning early doing nothing if the host state is not SHOST_RUNNING. > > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx> Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@xxxxxxxxxxxxx>
