diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2019-11-16 06:36:57 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-11-20 05:37:34 +0300 |
| commit | 0b7a223552d455bcfba6fb9cfc5eef2b5fce1491 (patch) | |
| tree | ce331aae01fced18b9918b3c4fffe74ec72f14ab /drivers/scsi/NCR5380.c | |
| parent | d04fc41af247a2ce993155bce7995d857464a096 (diff) | |
| download | linux-0b7a223552d455bcfba6fb9cfc5eef2b5fce1491.tar.xz | |
scsi: NCR5380: Add disconnect_mask module parameter
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@gmail.com>
Link: https://lore.kernel.org/r/993b17545990f31f9fa5a98202b51102a68e7594.1573875417.git.fthain@telegraphics.com.au
Reviewed-and-tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/NCR5380.c')
| -rw-r--r-- | drivers/scsi/NCR5380.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 43745f26ef75..f2f7e6e76c07 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 *); @@ -967,7 +970,8 @@ 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", |