diff options
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 3c92dc2a25a0..888e16ec8554 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -377,6 +377,7 @@ enum storvsc_request_type { #define SRB_STATUS_SUCCESS 0x01 #define SRB_STATUS_ABORTED 0x02 #define SRB_STATUS_ERROR 0x04 +#define SRB_STATUS_DATA_OVERRUN 0x12 #define SRB_STATUS(status) \ (status & ~(SRB_STATUS_AUTOSENSE_VALID | SRB_STATUS_QUEUE_FROZEN)) @@ -996,6 +997,7 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request, struct scsi_cmnd *scmnd = cmd_request->cmd; struct scsi_sense_hdr sense_hdr; struct vmscsi_request *vm_srb; + u32 data_transfer_length; struct Scsi_Host *host; u32 payload_sz = cmd_request->payload_sz; void *payload = cmd_request->payload; @@ -1003,6 +1005,7 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request, host = stor_dev->host; vm_srb = &cmd_request->vstor_packet.vm_srb; + data_transfer_length = vm_srb->data_transfer_length; scmnd->result = vm_srb->scsi_status; @@ -1016,13 +1019,20 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request, &sense_hdr); } - if (vm_srb->srb_status != SRB_STATUS_SUCCESS) + if (vm_srb->srb_status != SRB_STATUS_SUCCESS) { storvsc_handle_error(vm_srb, scmnd, host, sense_hdr.asc, sense_hdr.ascq); + /* + * The Windows driver set data_transfer_length on + * SRB_STATUS_DATA_OVERRUN. On other errors, this value + * is untouched. In these cases we set it to 0. + */ + if (vm_srb->srb_status != SRB_STATUS_DATA_OVERRUN) + data_transfer_length = 0; + } scsi_set_resid(scmnd, - cmd_request->payload->range.len - - vm_srb->data_transfer_length); + cmd_request->payload->range.len - data_transfer_length); scmnd->scsi_done(scmnd); |