diff options
Diffstat (limited to 'drivers/scsi/dtc.c')
| -rw-r--r-- | drivers/scsi/dtc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c index bc856c8ba0dd..010d9b13aae7 100644 --- a/drivers/scsi/dtc.c +++ b/drivers/scsi/dtc.c @@ -419,6 +419,20 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, return (0); } +static int dtc_dma_xfer_len(struct scsi_cmnd *cmd) +{ + int transfersize = cmd->transfersize; + + /* Limit transfers to 32K, for xx400 & xx406 + * pseudoDMA that transfers in 128 bytes blocks. + */ + if (transfersize > 32 * 1024 && cmd->SCp.this_residual && + !(cmd->SCp.this_residual % transfersize)) + transfersize = 32 * 1024; + + return transfersize; +} + MODULE_LICENSE("GPL"); #include "NCR5380.c" |