Add a module parameter to inhibit disconnect/reselect for individual targets. This gains compatibility with Aztec PowerMonster SCSI/SATA adapters with buggy firmware. (No fix is available from the vendor.) Apparently these adapters pass-through the product/vendor of the attached SATA device. Since they can't be identified from the response to an INQUIRY command, a device blacklist flag won't work. Cc: Michael Schmitz <schmitzmic@xxxxxxxxx> Reviewed-and-tested-by: Michael Schmitz <schmitzmic@xxxxxxxxx> Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> --- This should be a per-host or per-bus setting and not per-driver (though in the case of atari_scsi there is only one host). Is there a better way? --- drivers/scsi/NCR5380.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 536426f25e86..d4401c768a0c 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -129,6 +129,9 @@ #define NCR5380_release_dma_irq(x) #endif +static unsigned int disconnect_mask = ~0; +module_param(disconnect_mask, int, 0444); + static int do_abort(struct Scsi_Host *); static void do_reset(struct Scsi_Host *); static void bus_reset_cleanup(struct Scsi_Host *); @@ -954,7 +957,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) int err; bool ret = true; bool can_disconnect = instance->irq != NO_IRQ && - cmd->cmnd[0] != REQUEST_SENSE; + cmd->cmnd[0] != REQUEST_SENSE && + (disconnect_mask & BIT(scmd_id(cmd))); NCR5380_dprint(NDEBUG_ARBITRATION, instance); dsprintk(NDEBUG_ARBITRATION, instance, "starting arbitration, id = %d\n", -- 2.23.0
