Re: [PATCH] libata: error processing + rw 6 byte fix

[Jeff Garzik]

Here is the patch I just checked in.

        Jeff




diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -630,11 +630,19 @@ static unsigned int ata_scsi_rw_xlat(str
                tf->lbah = scsicmd[3];
 
                VPRINTK("ten-byte command\n");
+               if (qc->nsect == 0) /* we don't support length==0 cmds */
+                       return 1;
                return 0;
        }
 
        if (scsicmd[0] == READ_6 || scsicmd[0] == WRITE_6) {
                qc->nsect = tf->nsect = scsicmd[4];
+               if (!qc->nsect) {
+                       qc->nsect = 256;
+                       if (lba48)
+                               tf->hob_nsect = 1;
+               }
+
                tf->lbal = scsicmd[3];
                tf->lbam = scsicmd[2];
                tf->lbah = scsicmd[1] & 0x1f; /* mask out reserved bits */
@@ -674,6 +682,8 @@ static unsigned int ata_scsi_rw_xlat(str
                tf->lbah = scsicmd[7];
 
                VPRINTK("sixteen-byte command\n");
+               if (qc->nsect == 0) /* we don't support length==0 cmds */
+                       return 1;
                return 0;
        }